单选题The 20-year-old tennis player"s dream is to ______ China at 2008 Beijing Olympic Games.

单选题Scientists formerly assumed that coral populations remained stable, dead polyps being replaced by now ones that build on the "skeletons" left behind. Recent investigations, however, reveal more dynamic processes. Whole sections of a colony may die and not be replaced. This process, known as partial colony mortality, is evident in a series of photographs over time, but often impossible to detect in site because "skeletons" bared by the death of overlying tissue are readily overgrown by other organisms or abraded by grazers. Partial mortality can produce fission the process of a large colony splitting apart into two or more adjacent colonies that presumably have identical genetic makeup. Subsequent lateral growth may unite these colonies in a process called fusion. As a consequence of these three processes, estimates of coral ages based on size are Partial mortality and fission, which reduce colony size, occur more frequently than fusion, and thus estimates of coral age based on colony size are probably far too low.

单选题A little learning is a dangerous thing, ______ the saying goes.

单选题The author's attitude towards the jury system is______.

单选题The new appointment of our president ______ from the very beginning of next semester. A. takes effect B. takes part C. takes place D. takes turns

单选题______of the seven continents were placed in the Pacific Ocean, there would still be room left for another continent the size of Asia.

单选题I'm sure that she'll cope with the changes very well. She is very ______.

单选题It was not until he arrived at the station ______ he realized he had forgotten his ticket. A. before B. that C. when D. after

单选题Here is ______ for you, Mr. Smith. A. a luggage B. luggages C. a piece of luggage D. a piece of luggages

单选题The dean tried to retain control of the situation on campus, but his attempt was ______ by the board of trustees.

单选题 In this age of ad clutter and junk mail, entrepreneurs are finding that one of the easiest ways to connect with customers is to moonlight (兼职) as a publisher. Newsletters remind clients you're still there, help spark repeat business, and sometimes can be used to attract new clients. Newsletters are certainly catching on. The Standard Periodical Directory counts more than 4,000 of them and estimates the number grows 15% a year. Maybe that's because it's not hard. All you need is a little cash and creativity. First, obviously, decide what to say. Stick to useful information, as opposed to self-promotion. Can you offer tips unavailable elsewhere? How about new ways to use an old product? As for design, software programs such as Adobe PageMaker provide templates (模板) for the do-it-yourself. Or you can hire a professional out of the Yellow Pages or off the Web. They'll do the design work, write the copy, and even do the mailing. Expect to spend about $1 per copy, including postage, for a run of several thousand; unit costs drop as the press run increases. Newsletters also can be published on the Web or sent via e-mail, but beware. Experts say unsolicited (未请求的，主动提供的) e-mail is far less effective than a physical publication. In either case, aim for people who will find it genuinely useful and interesting. "If you don't send it to the right people, it just gets thrown out," says Paul Swift, editor of The Newsletter about Newsletters. A poorly designed newsletter, or one rife with errors, is worse than no newsletter. A newsletter should not be seen as a substitute for efforts to expand your existing customer base. "You still need to try to get yourself mentioned in real news media," advises Laura Ries, of the Roswell marketing firm Ries ＆ Ries Inc. A well-executed newsletter can work wonders. Consider the one Lisa Skriloff, owner of New York's Multicultural Marketing Resources Inc., puts out. Every two months, Skriloff spends several days—and several thousand dollars—producing Multicultural Marketing News, a four-page newsletter filled with tips on reaching minority consumers. "It helps position my company as an expert in the field," Skriloff says. She also distributes the newsletter at conferences and mails it to potential clients—outreach that generates 10…… of her business. Perhaps it's time more entrepreneurs take a page from the academics: publish or perish (毁灭，死亡).

单选题Overall, it is going to become much easier for people to communicate ______ the Net Communicating with others in real time will soon be the norm.

单选题It is high time that we ______ all ready for this afternoon meeting, ______ it would be late. A. must get, or B. got, or C. should get, and D. get, and

单选题What does Jastrow think of many scientists?

单选题He is doing an______course in physics.