科学家研究甲、乙两种生活在不同栖所的哺乳动物,分析母乳的成分如下表;分别强迫灌饮海水

题型:多项选择题 案例分析题

问题:

科学家研究甲、乙两种生活在不同栖所的哺乳动物,分析母乳的成分如下表;分别强迫灌饮海水1公升后,再分析尿量和其成分,结果亦列于下表。

选出最有可能的配对()

A.甲为水牛,乙为海马

B.甲为骆驼,乙为海象

C.甲为蜥蜴,乙为鸭嘴兽

D.甲为山猪,乙为鲸鱼

考点:生物学生物学综合练习生物学综合练习题库
题型:多项选择题 案例分析题

阅读理解。

     It's half past nine now. Michael is still on the bed. He thinks it's Sunday today. His father works

behind the house. His mother cleans the rooms. Little Sandra, his sister, watches their grandma milks the

cow (挤奶) under the tree. She asks Michael to take the basin (桶) of milk in the room. The boy hears

her, but he doesn't answer. So Sandra comes into his bedroom and says, "Get up, Michael. Grandma

wants your help."

     "Why don't you help her?" asks the boy.

     "She says I'm too young."

     Michael gets up. But he finds a math book and reads, "...six times (乘以) six is thirty-six; six times

seven is thirty-seven..."

     His mother is angry (生气) and says, "What are you reading, Michael?"

     "I don't know."

     "Aren't you reading?"

     "Yes. But I'm not listening."

1. Why doesn't Michael go to school?

A. Because he isn't a student.

B. Because he feels tired.

C. Because it's Sunday today.

D. Because he waits for his father.

2. How many people are there in Michael's family?

A. There're four.      

C. There're six.

B. There're five.      

D. There're seven.

3. What does Grandma want Michael to do?

A. She wants him to help her.

B. She wants him to drink the milk.

C. She wants him to milk the cow.

D. She wants him to do his homework.

4. ______, so he begins to read the book.

A. Michael is not good at math

B. Michael does not have breakfast

C. Michael does not hear his grandma

D. Michael does not want to work

5. Michael's mother is angry because ______.

A. her son is still on the bed

B. her son reads wrongly

C. her son only likes playing

D. her son does not listen to her

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