单选题Since the new technology was introduced last month, we______in speeding up production.

单选题 Now listen to the following recording and answer questions15-17.

单选题When did the name "Air Jordan" become well known? A. After a reporter compared his dunk to flying. B. After he won the "Most Valuable Player" in NBA. C. In his freshman year in the university. D. In his first year in NBA.

单选题American linguist Noah Webster was among the first to the growing difference between American and British usages of English. 

单选题It is important that scientists be seen as normal people asking and answering important questions. Good, sound science depends on 28 , experiments and reasoned methodologies. It requires a willingness to ask new questions and try new approaches. It requires one to take risks and experience failures. But good science also requires 29 understanding, clear explanation and concise presentation. Our country needs more scientists who are willing to step out in the public 30 and offer their opinions on important matters. We need more scientists who can explain what they are doing in language that is 31 and understandable to the public. Those of us who are not scientists should also be prepared to support public engagement by scientists, and to 32 scientific knowledge into our public communications. Too many people in this country, including some among our elected leadership, still do not understand how science works or why robust, long-range investments in research vitally matter. In the 1960s, the United States 33 nearly 17% of discretionary (可酌情支配的) spending to research and development, 34 decades of economic growth. By 2008, the figure had fallen into the single 35 . This occurs at a time when other nations have made significant gains in their own research capabilities. At the University of California (UC), we 36 ourselves not only on the quality of our research, but also on its contribution to improving our world. To 37 the development of science from the lab bench to the market place, UC is investing our own money in our own good ideas. A. arena B. contextual C. convincing D. devoted E. digits F. hasten G. hypotheses H. impairing I. incorporate J. indefinite K. indulge L. inertia M. pride N. reaping O. warrant

单选题Not you but your father ______.

单选题The streets are all wet. It ______ during the night.

单选题The teacher doesn't permit ______ in class. A. smoke B. smoking C. to smoke D. to have a smoke

单选题 Questions2-5 are bused on the conversation you have just heard.

单选题Students with psychological training who were tested ______.

单选题 Which of the following sentences has a subject complement? ______

单选题The tallest building in Americas capital city is the Washington Monument纪念碑． It is 21 for George Washington , the first president of the United States． He 22 the American colonies殖民地 in the War o

单选题If you intend using humor in your talk to make people smile, you must know how to identify shared experiences and problems. Your humor must be relevant to the audience and should help to show them that you are one of them or that you understand their situation and are in sympathy with their point of view. Depending on whom you are addressing, the problems will be different. If you are talking to a group of managers, you may refer to the disorganized methods of their secretaries; alternatively if you are addressing secretaries, you may want to comment on their disorganized bosses. Here is an example, which I heard at a nurses" convention, of a story which works well because the audience all shared the same view of doctors. A man arrives in heaven and is being shown around by St. Peter. He sees wonderful accommodations, beautiful gardens, sunny weather, and so on. Everyone is very peaceful, polite and friendly until, waiting in a line for lunch, the new arrival is suddenly pushed aside by a man in a white coat, who rushes to the head of the line, grabs his food and stomps over to a table by himself. "Who is that?" the new arrival asked St. Peter. "Oh, that"s God," came the reply, "but sometimes he thinks he"s a doctor." If you are part of the group which you are addressing, you will be in a position to know the experiences and problems which are common to all of you and it"ll be appropriate for you to make a passing remark about the inedible canteen food or the chairman"s notorious bad taste in ties. With other audiences you mustn"t attempt to cut in with humor as they will resent an outsider making disparaging remarks about their canteen or their chairman. You will be on safer ground if you stick to scapegoats like the Post Office or the telephone system. If you feel awkward being humorous, you must practice so that it becomes more natural. Include a few casual and apparently off-the-cuff remarks which you can deliver in a relaxed and unforced manner. Often it"s the delivery which causes the audience to smile, so speak slowly and remember that a raised eyebrow or an unbelieving look may help to show that you are making a light-hearted remark. Look for the humor. It often comes from the unexpected. A twist on a familiar quote "If at first you don"t succeed, give up" or a play on words or on a situation. Search for exaggeration and understatements. Look at your talk and pick out a few words or sentences which you can turn about and inject with humor.

单选题We all know that arrows are often used as______to show directions.

单选题From paragraph 3 we can learn that ______.

单选题We came in this field late, so we must work hard to make ______ lost time.

单选题Which of the following is not the way to de-stress the parents' heavy burden?

单选题Man: I have received a letter from Harry this afternoon. He said he wants to know if he can get a job in your office for the summer.Woman: I rather think it would be better for him to get a job somewhere else to learn to stand on his own feet instead of depending on his family to help him.Question: What is the probable relationship between Harry and the man?