登录
D
Recently, many places across the country have experienced heavy snowfall, and the snowflakes(雪花) look pretty and cute. Do you like snow? Do you know how snowflakes are made? Let's see a snowflake's life journey together!
Each snowflake gets to the ground differently. The wind and temperature may change their way and this makes each snowflake different.
① I begin as a speck of dust(一粒灰尘) in a cloud.
② The weather is so cold that water vapor(蒸汽) begins to stay on my body. As more and more water vapor gets on me, I get caught in a water droplet(水滴).
③ Because it is so cold, the droplet becomes a small six-sided ball of ice.
④ As more water droplets join me, I get six arms on each side.
⑤ Each arm grows smaller arms of its own as I get bigger and bigger.
⑥ Then, I wait while growing until one day the ground is cold enough so that I can come down from the cloud to the ground.
⑦ Finally, I get to the ground with many other snowflakes. What a beautiful snowy blanket(毯子) we make together!
(
A. A water droplet.
B. A speck of dust in a cloud.
C. A six-sided ice ball.
D. A small arm-shaped crystal.
(
A. Because they form in different clouds.
B. Because they have different amounts of water vapor.
C. Because wind and temperature change their moving paths.
D. Because they fall from different heights.
(
A. The weather becomes warm suddenly.
B. The droplet is in a cold environment.
C. More dust gets stuck to the droplet.
D. The wind stops blowing.
(
a. The droplet becomes a six-sided ice ball.
b. A speck of dust gets covered with water vapor.
c. The ice ball grows six arms with small branches.
d. The snowflake falls to the ground.
A. b-a-c-d B. a-b-c-d C. b-c-a-d D. a-c-b-d
Recently, many places across the country have experienced heavy snowfall, and the snowflakes(雪花) look pretty and cute. Do you like snow? Do you know how snowflakes are made? Let's see a snowflake's life journey together!
Each snowflake gets to the ground differently. The wind and temperature may change their way and this makes each snowflake different.
① I begin as a speck of dust(一粒灰尘) in a cloud.
② The weather is so cold that water vapor(蒸汽) begins to stay on my body. As more and more water vapor gets on me, I get caught in a water droplet(水滴).
③ Because it is so cold, the droplet becomes a small six-sided ball of ice.
④ As more water droplets join me, I get six arms on each side.
⑤ Each arm grows smaller arms of its own as I get bigger and bigger.
⑥ Then, I wait while growing until one day the ground is cold enough so that I can come down from the cloud to the ground.
⑦ Finally, I get to the ground with many other snowflakes. What a beautiful snowy blanket(毯子) we make together!
(
B
)27. What is the first form of a snowflake?A. A water droplet.
B. A speck of dust in a cloud.
C. A six-sided ice ball.
D. A small arm-shaped crystal.
(
C
)28. Why do all snowflakes look different when they reach the ground?A. Because they form in different clouds.
B. Because they have different amounts of water vapor.
C. Because wind and temperature change their moving paths.
D. Because they fall from different heights.
(
B
)29. What happens when the water droplet turns into a small ice ball?A. The weather becomes warm suddenly.
B. The droplet is in a cold environment.
C. More dust gets stuck to the droplet.
D. The wind stops blowing.
(
A
)30. Which of the following is the correct order of a snowflake's growth?a. The droplet becomes a six-sided ice ball.
b. A speck of dust gets covered with water vapor.
c. The ice ball grows six arms with small branches.
d. The snowflake falls to the ground.
A. b-a-c-d B. a-b-c-d C. b-c-a-d D. a-c-b-d
答案
27.B 28.C 29.B 30.A
解析
【分析】
这是一组英语阅读理解的细节题与排序题，解题思路为：针对各题干关键词，定位原文对应语句，逐一比对选项与原文内容，排除错误选项确定答案；排序题需梳理原文描述的雪花形成各步骤的先后顺序，再匹配选项。
【解析】
27题：题干问雪花的最初形式，定位原文第①句“I begin as a speck of dust in a cloud.”，可知雪花最初是云里的一粒灰尘，选项B符合；A（水滴）、C（六面冰球）、D（臂状晶体）均为后续形态，排除。
28题：题干问雪花不同的原因，定位原文第二段“The wind and temperature may change their way and this makes each snowflake different.”，可知是风和温度改变路径导致，选项C符合；A、B、D原文未提及，排除。
29题：题干问水滴变冰球的原因，定位原文第③句“Because it is so cold, the droplet becomes a small six-sided ball of ice.”，可知是因为环境寒冷，选项B符合；A（暖）与原文相反，C、D原文未提及，排除。
30题：梳理原文雪花生长顺序：①对应b（灰尘），②对应“水蒸气附着在灰尘上”，③对应a（水滴变六面冰球），④⑤对应c（长六臂和小分支），⑥⑦对应d（落到地面），故顺序为b-a-c-d，选A。
【答案】27.B 28.C 29.B 30.A
【知识点】英语阅读理解、细节理解题、信息排序题
【点评】本题围绕雪花形成的科普内容设题，侧重考查学生快速定位原文信息的能力，题型基础，只要仔细阅读原文，准确匹配对应内容即可得分，适合巩固阅读理解的基础解题方法。
【难度系数】0.7
这是一组英语阅读理解的细节题与排序题，解题思路为：针对各题干关键词，定位原文对应语句，逐一比对选项与原文内容，排除错误选项确定答案；排序题需梳理原文描述的雪花形成各步骤的先后顺序，再匹配选项。
【解析】
27题：题干问雪花的最初形式，定位原文第①句“I begin as a speck of dust in a cloud.”，可知雪花最初是云里的一粒灰尘，选项B符合；A（水滴）、C（六面冰球）、D（臂状晶体）均为后续形态，排除。
28题：题干问雪花不同的原因，定位原文第二段“The wind and temperature may change their way and this makes each snowflake different.”，可知是风和温度改变路径导致，选项C符合；A、B、D原文未提及，排除。
29题：题干问水滴变冰球的原因，定位原文第③句“Because it is so cold, the droplet becomes a small six-sided ball of ice.”，可知是因为环境寒冷，选项B符合；A（暖）与原文相反，C、D原文未提及，排除。
30题：梳理原文雪花生长顺序：①对应b（灰尘），②对应“水蒸气附着在灰尘上”，③对应a（水滴变六面冰球），④⑤对应c（长六臂和小分支），⑥⑦对应d（落到地面），故顺序为b-a-c-d，选A。
【答案】27.B 28.C 29.B 30.A
【知识点】英语阅读理解、细节理解题、信息排序题
【点评】本题围绕雪花形成的科普内容设题，侧重考查学生快速定位原文信息的能力，题型基础，只要仔细阅读原文，准确匹配对应内容即可得分，适合巩固阅读理解的基础解题方法。
【难度系数】0.7
