问题 填空题

如图为某元素的原子结构示意图,该元素原子核内有______个质子,最外层有______个电子,该原子在化学反应中容易______电子(填“得到”或“失去”),成为______离子.

答案

在原子结构示意图中圆圈内的数字为质子数,可知该元素原子核内有17个质子,最外层电子数为7,该元素的原子在化学反应中一般要得到1个电子而形成稳定结构,所以该元素的离子带负电荷,属于阴离子.

故答案为:17;7;得到;阴;

完形填空

Mrs. Green was very fat. She weighed 100kg, and she    1   heavier every month.

   2   she went to see a doctor. The doctor said, “You    3   to go on a diet(节食), Mrs. Green. I’ve got a food list here.” He gave her a small book and said, “   4   it carefully and eat the things on page 11 every day. Then come back and see me    5   two weeks.”

Mrs. Green cam back two weeks    6  , but she wasn’t thinner and was even

   7  . The doctor was surprised and asked, “Are you eating the things on page 11 of the small book?”

“Yes, doctor,” she answered.

The next day,    8   visited Mrs. Green in the afternoon. He was very  9 

to see her.

“Mrs. Green,” he asked, “why are you eating potatoes and bread? You aren’t on the diet!”

“But doctor,” Mrs. Green answered, “I eat my diet    10   lunch time. This is my tea(下午茶).”

小题1:A. gets            B. is getting             C. was getting

小题2:A. So             B. But                  C. Because

小题3:A. want           B. like                  C. have

小题4:A. Watch          B. Read                 C. Find

小题5:A. behind         B. in                    C. for

小题6:A. ago            B. late                  C. later

小题7:A. fatter          B. thinner                C. taller

小题8:A. her parents      B. her friend             C. the doctor

小题9:A. happy          B. afraid                C. surprised

小题10:A. at            B. on                   C. in

选择题