2. What does the phrase “litters of pups” mean in the second paragraph?

　　A. Baby rats. B. Animals. C. Old rats. D. Grown-up rats.

　　3. What can protect the brain of a woman according to the passage?

　　A. Estrogen. B. The hormones of pregnancy.

　　C. More exercise. D. Taking care of children.

　　4. “It’s rat data but humans are mammals just like these animals are mammals.” What does the sentence suggest?

　　A. The experiments on the rats have nothing to do with humans.

　　B. The experiments on the rats are very important for animals.

　　C. The experiments on the rats are much the same on humans.

　　D. The experiments on the rats are much the same on other animals.

　　5. Which title is the best for this passage?

　　A. Do You Want to Be Smarter?

　　B. Motherhood Makes Women Smarter

　　C. Mysterious Hormones

　　D. An Important Study

　　本文介绍了一个观点：母性特点能使妇女变得更加聪明灵敏。

　　1. C。细节题。根据Tests on rats show… 可知科学家是通过做老鼠实验得出这个结论的。

　　2. A。词义猜测题。后面的对比who have no babies，实际上提供了一个相反的情况，所以我们可以推测those who raise two or more litters of pups中的litters of pups指的是“刚出生不久的小老鼠”。

　　3. B。细节题。根据文章第 3 段中的 …the hormones of pregnancy(怀孕) are protecting the brain可得出答案。

　　4. C。句意理解题。科学家通过用老鼠做实验来说明人的问题。因为人和老鼠都属于哺乳动物，很多生理机能都相同。

　　5. B。主旨题。短文第 1 句 Motherhood may make women smarter 是主题句，据此我们可以得出答案。

       以上就是本文的全部内容，更多精彩请随时关注新东方长春学校官网。

相关推荐

高中相关资讯

高一课程

高二课程

高考课程

高考咨询

　　以上就是本文的全部内容，更多精彩内容，请持续关注长春新东方网。