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问题 选择题

Ann often               cartoons on TV. [ ]

A. watch                                   

B. watching                   

C. watches                                

D. watchs 

答案

答案：C

解答题
观察下列各式及其验算过程：
2+
2
3
=2
2
3
，验证：
2+
2
3
=
2×3+2
3
=
23
3
=2
2
3
；
3+
3
8
=3
3
8
，验证：
3+
3
8
=
3×8+3
8
=
33
8
=3
3
8

（1）按照上述两个等式及其验证过程的基本思路，猜想
4+
4
15
的变形结果并进行验证．
（2）针对上述各式反映的规律，写出用n（n为大于1的整数）表示的等式并给予验证．
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填空题

用所给单词的正确形式填空。  

1. His friend is very       (friend) to me.  

2. He is       (difference) from his brother.  

3. Have you finished       (do) your homework?  

4. My brother enjoys       (watch) TV.  

5. He offered to       (take) me to the park.  

6. We'd better       (call) your mother.  

7. It made me       (remember) my own visit to Japan.  

8. There are some       (fox) in the forest.  

9. It's very kind of you      (carry) the box for me.  

10. The story is very       (interest).
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