问题 单项选择题

角质层细胞易于脱落的原因是()。

A.细胞间脱水

B.细胞器和细胞核消失

C.细胞间桥粒消失

D.分裂能力旺盛

答案

参考答案:C

判断题
完形填空

When I had something difficult to do, I used to ask my mother for help. But she always said, “Do it  yourself, dear.” I was not         at all. I thought she was the               mother in the world!

For example, one day, I decided to      some friends to my home. My bedroom was not in order. Books were everywhere. And I didn’t make the bed. I asked my       to help me clean it,       she still said, “Do it yourself, girl.”

Because of my “lazy mother”, I have to         my clothes and clean my room. I have to help my parents         I even have to go to the dentist by myself. It is really hard  for me to do everything well, but I have learned      .

As time goes by, I understand my mother. She makes me clever and diligent (勤奋的)          a great mother!

A        mother is worth(等值于) one hundred teachers! Don’t you think so?

小题1:A. old                 B. glad             C. thin

小题2:A. tallest             B. most foolish     C. laziest

小题3:A. leave               B. invite               C. visit

小题4:A. mother              B. father               C. brother

小题5:A. or                  B. when             C. but

小题6:A. wash                B. lead             C. knock

小题7:A. do housework        B. go swimming      C. go camping

小题8:A. on show            B. by mistake           C. a lot

小题9:A. Which               B. What             C. Who

小题10:A. young              B. good             C. happy