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1. 下列图形中,既是中心对称图形又是轴对称图形的是(
A.112 625
B.350 625
C.600 625
D.832 625
B
).A.
B.
C.
D.
答案
1. B 【点拨】本题考查轴对称图形,中心对称图形的识别.
【解析】A.是轴对称图形,但不是中心对称图形,故不符合题意;
B.既是中心对称图形又是轴对称图形,故符合题意;C.是中心对称图形,但不是轴对称图形,故不符合题意;D.是轴对称图形,但不是中心对称图形,故不符合题意. 故选 B.
【解析】A.是轴对称图形,但不是中心对称图形,故不符合题意;
B.既是中心对称图形又是轴对称图形,故符合题意;C.是中心对称图形,但不是轴对称图形,故不符合题意;D.是轴对称图形,但不是中心对称图形,故不符合题意. 故选 B.
2. 下列运算中,结果正确的是(
A.$2m^2 + m^2 = 3m^4$
B.$m^2 · m^4 = m^8$
C.$m^4 ÷ m^2 = m^2$
D.$(m^2)^4 = m^6$
C
).A.$2m^2 + m^2 = 3m^4$
B.$m^2 · m^4 = m^8$
C.$m^4 ÷ m^2 = m^2$
D.$(m^2)^4 = m^6$
答案
2. C 【点拨】本题考查合并同类项、同底数幂的乘法运算和除法运算、幂的乘方运算,掌握相关运算法则是解题的关键.
【解析】A. $2m^2 + m^2 = 3m^2$,选项错误;B. $m^2 · m^4 = m^{2+4} = m^6$,选项错误;C. $m^4 ÷ m^2 = m^{4-2} = m^2$,选项正确;D. $(m^2)^4 = m^{2×4} = m^8$,选项错误. 故选 C.
【解析】A. $2m^2 + m^2 = 3m^2$,选项错误;B. $m^2 · m^4 = m^{2+4} = m^6$,选项错误;C. $m^4 ÷ m^2 = m^{4-2} = m^2$,选项正确;D. $(m^2)^4 = m^{2×4} = m^8$,选项错误. 故选 C.
3. 数据0.000 089 3用科学记数法表示为(
A.$8.93^{-5}$
B.$8.93×10^{-4}$
C.$8.93×10^{5}$
D.$8.93×10^{-5}$
D
).A.$8.93^{-5}$
B.$8.93×10^{-4}$
C.$8.93×10^{5}$
D.$8.93×10^{-5}$
答案
3. D 【点拨】本题考查科学记数法.
【解析$】0.000 089 3 = 8.93 × 10^{-5}. $故选 D.
【解析$】0.000 089 3 = 8.93 × 10^{-5}. $故选 D.
4. 如图,数轴上的点A与点B所表示的数分别为a,b,则下列不等式成立的是(
A.$a - 2 ＞ b - 2$
B.$3a ＞ 3b$
C.$-2a ＞ -2b$
D.$5a + 2 ＞ 5b + 2$
C
).A.$a - 2 ＞ b - 2$
B.$3a ＞ 3b$
C.$-2a ＞ -2b$
D.$5a + 2 ＞ 5b + 2$
答案
4. C 【点拨】本题考查数轴,不等式的性质.
【解析】由题图可知, a ＜ b. A. a - 2 ＜ b - 2,原不等式不成立;
B. 3a ＜ 3b,原不等式不成立;C. -2a ＞ -2b,原不等式成立;D. 5a + 2 ＜ 5b + 2,原不等式不成立. 故选 C.
【解析】由题图可知, a ＜ b. A. a - 2 ＜ b - 2,原不等式不成立;
B. 3a ＜ 3b,原不等式不成立;C. -2a ＞ -2b,原不等式成立;D. 5a + 2 ＜ 5b + 2,原不等式不成立. 故选 C.
5. 如图,面积为6的正方形ABCD的顶点A在数轴上,且表示的数为-1,若点E在数轴上(点E在点A的右侧),且AB=AE,则点E所表示的数为(
A.$\sqrt{6}-1$
B.$\sqrt{6}$
C.$\sqrt{6}+1$
D.1.6
A
).A.$\sqrt{6}-1$
B.$\sqrt{6}$
C.$\sqrt{6}+1$
D.1.6
答案
5. A 【点拨】本题考查实数与数轴及两点间的距离.
【解析】
∵ 正方形的面积为6,
∴ AB = √6.
∵ AB = AE,
∴ AE = √6.
∵ 点A表示的数是-1,且点E在点A右侧,
∴ 点E表示的数为√6 - 1. 故选 A.
【解析】
∵ 正方形的面积为6,
∴ AB = √6.
∵ AB = AE,
∴ AE = √6.
∵ 点A表示的数是-1,且点E在点A右侧,
∴ 点E表示的数为√6 - 1. 故选 A.
$＜[PLHD77_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD59_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PAD_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[BOS_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD65_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD70_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜function_never_used_51bce0c785ca2f68081bfa7d91973934=＜[PLHD82_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD56_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[EOG_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD86_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD84_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD57_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/escapeShell＞＜[PLHD85_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜escapeShell ＜[CLS_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD43_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|FCResponseBegin|$＞＜[PLHD99_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜parameter_never_used_51bce0c785ca2f68081bfa7d91973934=＜[PLHD65_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD87_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜RichMediaCreation＞＜[PLHD62_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/RichMediaReference＞＜/RichMediaCreation＞＜function_never_used_51bce0c785ca2f68081bfa7d91973934=＜$|paragraph|$＞:＜seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD65_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|superscript|$＞:＜[audio_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[eotu_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[eotu_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[EOGP_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD66_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD88_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/RichMediaReference＞＜[PLHD77_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD68_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD71_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD90_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/reflection_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD54_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD92_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD57_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD91_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|card|$＞:＜[PLHD67_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD93_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD87_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD79_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/RichMediaCreation＞＜[PLHD71_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD56_never_used_51bce0c785ca2f68081bfa7d91973934]＞$$＜/answer_never_used_51bce0c785ca2f68081bfa7d91973934＞＜seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜/answer_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD72_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD100_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|superscript|$＞:＜[PLHD72_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|FCResponseBegin|$＞＜[PLHD57_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|superscript|$＞:＜[EOGP_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/RichMediaShow＞＜/think_never_used_51bce0c785ca2f68081bfa7d91973934＞＜$|video|＞:＜|video|$＞:＜[PLHD55_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD75_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD67_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD68_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD100_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|paragraph|$＞:＜[PLHD85_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[eou_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/parameter_never_used_51bce0c785ca2f68081bfa7d91973934＞＜answer_never_used_51bce0c785ca2f68081bfa7d91973934＞＜$|image|$＞:＜[PLHD68_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD61_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD64_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD93_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD68_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD94_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[SPEAK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|card|$＞:＜doubaothinking_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD90_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜parameter_never_used_51bce0c785ca2f68081bfa7d91973934=＜RichMediaShow＞＜[PLHD78_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD69_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜RichMediaCreation＞＜[PLHD89_never_used_51bce0c785ca2f68081bfa7d91973934]＞$ $＜[PLHD98_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[EOG_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD92_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD71_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/RichMediaCreation＞＜[PLHD71_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD68_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜/RichMediaCreation＞＜$|card|$＞:＜[PLHD73_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD95_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[SOGP_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[CLS_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|FCResponseBegin|＞＜|image|$＞:＜[PLHD73_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD69_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD88_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD87_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/think_never_used_51bce0c785ca2f68081bfa7d91973934＞＜$|card|$＞:＜[PLHD66_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜function_never_used_51bce0c785ca2f68081bfa7d91973934=＜[PLHD82_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/hiddenthink＞＜[MASK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD57_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[eou_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD88_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD61_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|FCResponseBegin|$＞＜[audio_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[SOGP_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD56_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|video|$＞:＜[PLHD57_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD91_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD80_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜RichMediaReference＞＜[PLHD58_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜answer_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD83_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[audio_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜hiddenthink＞＜[PLHD90_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|superscript|$＞:＜[PLHD43_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD92_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[audio_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|FCResponseBegin|$＞＜function_never_used_51bce0c785ca2f68081bfa7d91973934=＜[PLHD72_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD87_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|FCResponseBegin|$＞＜[PLHD92_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD93_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[BOS_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD90_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD72_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[BOS_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[EOG_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD93_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PAD_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD59_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD80_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD70_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜hiddenthink＞＜[PLHD66_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD55_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[SEP_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD77_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜hiddenthink＞＜[PLHD58_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD78_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD85_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[UNK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD86_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|FCResponseBegin|$＞＜[PLHD91_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[eou_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜doubaothinking_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD76_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD66_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/escapeShell＞＜/doubaothinking_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[BOS_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[eotu_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[/audio_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜reflection_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD66_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜function_never_used_51bce0c785ca2f68081bfa7d91973934=＜[PLHD72_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[bou_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD72_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD100_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD63_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD83_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜reflection_never_used_51bce0c785ca2f68081bfa7d91973934＞＜/doubaothinking_never_used_51bce0c785ca2f68081bfa7d91973934＞＜answer_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD63_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[UNK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[UNK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/reflection_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD87_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/RichMediaReference＞＜[PAD_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜answer_never_used_51bce0c785ca2f68081bfa7d91973934＞＜/RichMediaCreation＞＜/seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD76_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD77_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜reflection_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD86_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD54_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜doubao_withdraw＞＜[PLHD58_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD97_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[BOS_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD82_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[UNK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜RichMediaShow＞＜RichMediaShow＞＜[PLHD90_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD89_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD43_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD87_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD98_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD76_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[MASK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/parameter_never_used_51bce0c785ca2f68081bfa7d91973934＞＜/function_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[SILENT_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜escapeShell ＜[SOG_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD78_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD66_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/doubaothinking_never_used_51bce0c785ca2f68081bfa7d91973934＞＜reflection_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[SPEAK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD56_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[UNK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD85_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/RichMediaReference＞＜[PLHD70_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜RichMediaCreation＞＜[PLHD100_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD70_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/RichMediaShow＞＜[EOG_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD88_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD79_never_used_51bce0c785ca2f68081bfa7d91973934]＞$$＜[PLHD89_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[eotu_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD98_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[SOI_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD58_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD60_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|video|$＞:＜[SEP_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/answer_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD58_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD93_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜answer_never_used_51bce0c785ca2f68081bfa7d91973934＞＜$|image|$＞:＜[SOG_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[SPEAK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/function_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[audio_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD62_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD60_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜reflection_never_used_51bce0c785ca2f68081bfa7d91973934＞＜RichMediaReference＞＜[PLHD63_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD80_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜RichMediaCreation＞＜reflection_never_used_51bce0c785ca2f68081bfa7d91973934＞＜function_never_used_51bce0c785ca2f68081bfa7d91973934=＜[PLHD59_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD81_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[BOS_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|card|$＞:＜RichMediaCreation＞＜[EOG_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/RichMediaShow＞＜[PLHD99_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[botu_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD98_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD94_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD68_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|superscript|$＞:＜[PLHD66_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD66_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD75_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|paragraph|$＞:＜[CLS_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD61_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD75_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜hiddenthink＞＜[SPEAK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[SOGP_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜/seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD55_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD92_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD78_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|video|$＞:＜[SPEAK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[EOG_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD59_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD80_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[SPEAK_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜/function_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[MASK_never_used_51bce0c785ca2f68081bfa7d91973934]＞$$＜reflection_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[/audio_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD87_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD54_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD59_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜parameter_never_used_51bce0c785ca2f68081bfa7d91973934=＜seed:tool_call_never_used_51bce0c785ca2f68081bfa7d91973934＞＜[PLHD65_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[bou_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD74_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD72_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[eou_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD89_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD96_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD78_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD81_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜$|video|$＞:＜[PLHD69_never_used_51bce0c785ca2f68081bfa7d91973934]＞＜[PLHD54_never_used_51bce0c785ca2f68081bfa7d91973934]＞$
答案
当前提供的题干内容全部为无效标记信息，缺失具体的数学题目内容，请补充完整的有效题目文本后再进行解答。
