“They do not realize that hormones are washing on the brain. If you look at female animals who have never gone through pregnancy, they act differently toward young. But if she goes through pregnancy, she will sacrifice her life for her infant—that is a great change in her behavior that showed in genetic alterations(改变) to the brain.”

　　1. How do scientists know “Motherhood may make women smarter”?

　　A. Some researchers have told them.

　　B. Many women say so.

　　C. They know it by experimenting on rats.

　　D. They know it through their own experience.

　　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.

【高考英语阅读理解专项训练：科技类（附详解）】相关文章：

★ 常熟市2014高考英阅读理解语一轮（暑假）训练题（3）及答案

★ 2017届高考英语二轮复习课时训练：11（含解析）

★ 【课堂新坐标】2017届高考英语（通用版）二轮复习短文改错专题训练：模式1 缺一词（含解析）

★ 2017高考四川省广安市英语阅读理解一轮系列训练：4（含解析）

★ 2017届高考英语二轮复习课时训练：10（含解析）

★ 2017届高考英语二轮复习大题冲关秘籍阅读理解七选五：解题策略（含解析）

★ 2017届高考英语二轮复习课时训练：8（含解析）

★ 贵州省贵阳市2014高考英语（新人教版）一轮阅读训练（30）附答案

★ 浙江省湖州市2014高考英语阅读理解一轮（暑假）精炼（1）含答案

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第6组（含解析）