题目内容
At the end of the 7 weeks, the step-test was again given to both groups of subjects, and their pulses taken. The post exercise pulse rates of subjects in the experimental group were found to have decreased an average of 30 heart beats per minute, with the lowest decrease of 28 and the highest decrease of 46. The pulse rates of subjects in the control group (Group B) remained the same or changed no more than 4 beats, with an average difference between the initial and final tests of zero.
How many people were in each group？
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【C16】______
听力原文：M: I think I'm more interested in sports now. I can't imagine how I can live without sports.
W: Don't you think you should spend more time on your studies？ Remember you've failed your exams three times up till now.
What does the woman think the man should do？
听力原文： Scientists at Brown University in the Northeastern United States [27] discover that bacteria from yogurt can be made into a substance that helps fight HIV. Led by Professor Bharat Ramratnam, they modify the bacteria to cream cyanovirin—[28] a protein that protects the body from infection by microorganisms such as bacteria, viruses, and fungi. The hope is to use the bio-engineered yogurt bacteria as the active ingredient in a foam, cream or suppository that can be applied before sex to prevent HIV transmission.
What is discovered by scientists at Brown University？
听力原文： American visitors to Eastern Asia are often surprised and puzzled by how Asian cultures and customs differ from those in the United States. What's considered typical or proper social conduct in one country may be regard as odd, improper or even rude in the other. (18) For example, people from some Eastern Asian countries may begin a conversation with a stranger by asking personal questions about family, home or work. Such questions are thought to be friendly, whereas they might be considered offensive in the United States. On the other hand, people in most Asian cultures are far more guarded about expressing their feelings publicly than most Americans are. (19) Openly displaying annoyance or anger, yelling, arguing loudly and so forth is considered ill-mannered in countries such as Japan. Many Eastern Asians prefer to hold their emotions in check and instead express themselves with great politeness. They try not to be blunt and avoid making direct criticisms. In fact, they often keep their differences of opinion to themselves and merely smile and remain silent rather than engage in a confrontation. By comparison, Americans are often frank about displaying both positive and negative emotions on the street and in other public places. Americans visiting Asia should keep in mind that such behavior. may cause offense. A major difference between American culture and most Asian cultures is that in Asia, the community is more important than the individual. (20) Most Americans are considered a success when they make a name for themselves.
How would some Asians start their conversation when they meet for the first time？
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