psychology professor Craig Kinsley believes his findings will translate into humans.

“Our research shows that the hormones of pregnancy(怀孕) are protecting the brain, including estrogen(雌激素), which we know has many neuroprotective (保护神经的) effects,” Kinsley said.

“It’s rat data but humans are mammals just like these animals are mammals,” he added in a telephone interview. “They go through pregnancy and hormonal changes.”

Kinsley said he hoped public health officials and researchers will look to see if having had children protects a woman from Alzheimer’s and other forms of age-related brain decline.

“When people think about pregnancy, they think about what happens to babies and the mother from the neck down,” said Kinsley, who presented his findings to the annual meeting of the Society of Neuroscience in Orlando, Florida.

“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 changes to the brain.”

51. How do scientists know “Motherhood may make women smarter”?A. They know it by experimenting on rats. B. Many women say so.

C. Some researchers have told them. D. They know it through their own experience.

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

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

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

A. Estrogen. B. Taking care of children.

C. More exercise. D. The hormones of pregnancy.

54. “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 are much the same on humans.

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

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

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

55. Which title is the best for this passage?

A. Do You Want to Be Smarter? B. An Important Study

C. Mysterious Hormones D. Motherhood Makes Women Smarter

第二节：信息匹配(共5小题；每小题2分，满分l0分)

请阅读下文和相关信息，并按照要求匹配信息。

下面是关于旅游胜地的介绍。

A. Manila is one of the Philippine’s oldest cities, and glimpses of cultures past and present blend together to give you an experience which is sometimes gritty, sometimes pleasant, but unmistakably authentic. Here you can enjoy seeing Authentic colonial churches which withstands the test of time. B. Dumaguete is the “city of gentle people.” It is where you can still find tree-lined streets, with motorcycles, not cars and taxis, dominating the road. Everything about it is simple and serene from its people to the various places surrounding the city. It is located in Negros Oriental, opposite Bacolod City. A University town where you can see more students than working professionals, Dumaguete is among the most peaceful and clean cities in the Visayas.

C. One the finest things about Samal Island is that there is more to it than just great beaches. You can go spelunking, you can go island hopping, or join in the fun during its festivals. Yes, it has a lot of celebrations. So, when you go to Samal, there is no way you can be bored because there is simply so much you can do! Just because it is Samal. Being one of the top tourist destinations in the country and boasting of sparkling waters, white sand beaches who could resist?