摘要:817] , great changes have taken place in our hometown. [译文] 在20世纪80年代.我的家乡发生了巨大的变化. A. In 1980s B. In the 1980 C. In a 1980s D. In the 1980s [答案及简析] D. 表示"在20世纪80年代"用in the 1980s表示.

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Motherhood may make women smarter and may help prevent dementia(痴呆) in old age by bathing the brain in protective hormones(荷尔蒙) , U.S. reseachers reported on Thursday.

Tests on rats show that those who raise two or more litters of pups do considerably better in tests of memory and skills than rats who have no babies, and their brains show changes that suggest they may be protected against diseases such as Alzheimer’s(早老痴呆症). University of Richmond 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 alterations(改变) to the brain.”

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.

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

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

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.

“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.

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

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Many people influenced various aspects of my life, based on their personal characteristics, accomplishments (才艺), and values. I have been fortunate to have had numerous teachers and professors who I respect for their patience and intelligence. There are artists that have inspired me by their natural talents and original creativity. I value many political leaders, who have inspired me by their contributions to society, and their ability to change our future. But of all the people I have known in my life, the person I admire most is my father.

As the youngest girl in my family, I always considered myself to be “Daddy’s little girl.” While growing up, it always made me sad to see so many of my friends and neighbours without a father or father-like figure around. This helped me appreciate how my father always takes an interest in his children’s lives. In my early life my father continuously pushes me to excel, so I could accomplish my work outstandingly among my people. Whenever I feel like giving up, or having a question or a concern, I know I can always call on him for advice. From him I have also learned that sometimes you have to put others’ needs ahead of your own, but not to the point they will begin to take advantage of you. His strength seems to be unbreakable during hard times, and he is extremely determined to accomplish anything he sets his mind on, no matter how tiny it is. I highly respect him for how he stands up for what he believes in, and will never back down. I have always admired his open mind, enthusiasm for work and people around, and sense of understanding. He is a very reserved man, but to everybody’s surprise, he has a great sense of humor, and always knows how to put a smile on the faces of his wife, his children and his friends.

Living in his affection and instruction, I am very proud of my father. He also professes how proud he is of his children, and is still there to support us in whatever we are involved in.

What is the best title for the passage?

A. How my father loved me as “Daddy’s little girl”.

B. My father – the person I admire most.

C. I am the apple on my father’s palm.

D. My father – the person who loved me most.

Which of the following could NOT be used to describe the writer’s father?

A. Considerate and humourous.          B. Affectionate and open-minded.

C. Energetic and helpful.                D. Knowledgeable and sociable.

Which of the following can best explain the underlined word “excel” in Paragraph 2?

A. Be more powerful than others.        B. Be richer than others.

C. Do better than others.               D. Be more charming than others.

By saying “you have to put others’ needs ahead of your own, but not to the point they will begin to take advantage of you” in Paragraph 2, the father was telling the writer to ______.

A. think for others and help them, but not to be made use of in negative ways

B. think for others and help them, so that you can make use of them to serve you

C. try to make use of those who want to do so to you

D. try to be good to those who are worth making friends with

What can we infer about the writer? 

A. She appreciated her father because he solved all the problems for her.

B. She was outstanding in work because her father pushed her too hard.

C. She considered her father silly and often laughed at him.

D. She has a strong sense of sympathy towards other people.

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