Ⅵ. Read and choose. 读一读,填序号,完成句子。
1.

2.

A.Here you are!
B.May I borrow one?
C.Two.
1.
C
2.
B
A
A.Here you are!
B.May I borrow one?
C.Two.
答案
1.C 2.B A
解析
1. 问句"How many rulers do you have?"询问数量,图中女孩比出“2”的手势,应选C。2. 男孩后续说“Thanks”,结合女孩回答“Sure.”,可知男孩先请求借尺子,选B;女孩同意后递出尺子,选A。
数独是一种运用纸、笔进行演算的逻辑游戏。玩家需要根据 $n× n$ 盘面上的已知数字,推理出所有剩余空格的数字,并满足每一行、每一列、每一个粗线宫内的均含数字 1~n,并且不重复(如左图)。同学们,试着填一填右侧的数字吧!
| four | two | one | three |
| one | three | four | two |
| two | four | three | one |
| three | one | two | four |

| three |
|
|
| two | three |
| four | two | one | three |
| one | three | four | two |
| two | four | three | one |
| three | one | two | four |
| three |
two
| four
| one
||
four
| one | three | two
||
one
| four | two
| three || two | three |
one
| four |答案
three two four one
four one three two
one four two three
two three one four
解析
1. 行4已有two, three, four,缺one,故行4列3=one;
2. 列3已有three(行2)、one(行4),需two和four。行3需one和two,故行3列3=two,行1列3=four;
3. 行3需one和two,列3=two,故行3列1=one;
4. 列1已有three(行1)、one(行3)、two(行4),缺four,故行2列1=four;
5. 行2已有one, three, four,缺two,故行2列4=two;
6. 行1已有three, four, one,缺two,故行1列2=two;
7. 行1列4=one(行1缺one)。
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