单选题The computer can be paid for in ten monthly______ of 100 dollars.

单选题—______you or he the teacher of English? —Neither I nor he______the teacher of English.

单选题Not until 1959 ______ this compound.

单选题As fuel prices rose, bus companies raised their fares, and ______.

单选题The young man opened his book ______ read it. A. but B. and C. or

单选题Mr. Hill ______.

单选题The factory had to ______ a number of employees because of the economic crisis in the country.

单选题In paragraph 1, "They were linked by telephones", "they" refers to ______.

单选题Do you have an afternoon ______ this week to meet the President? A. obtainable B. available C. visible D. reliable

单选题The Ministry of Science and Technology also said in July that an independent watch-dog will be created to scrutinize the use of research funds.

单选题November 7, 2000 is a very special day in the United States. Voters all across the nation are (21) representatives in local and national races. Some people think that they're voting for the president of our country too. They're not! Again, they're voting for (22) . These representatives are called electors. They are part of a system called the Electoral College. In most states the electors are chosen on a winner take all basis. That makes it (23) for one candidate to win (24) electors while getting less popular votes nationally than his (25) The (26) will meet in their respective states and vote for president and vice-president on December 18, 2000. The Constitution does not (27) the electors to vote for the candidates that they are pledged to, but they almost always do. (28) January 6, 2001, just two weeks before the (29) president and vice-president take office, the votes will be counted in Congress. If no one gets a majority (more than half) of the electoral votes, at least 270 out of 538, the (30) will be chosen by Congress. The House of Representatives will choose (one vote per state) the president and the Senate will choose the vice-president. It's not likely, but we could (31) end up with a president from one party and a vice-president from (32) In an extremely close election, all (33) of strange outcomes are possible. Will the (34) that most voters prefer be the next (35) ? And when will we even know?

单选题The opinion of the author on media reporting is that______.

单选题It was not______she had arrived home______she remembered she had forgotten her suitcase in the hotel.

单选题When you drive, you should ______ to traffic regulations.

单选题One of the most interesting {{U}}inhabitants{{/U}} of our world is the bee, an insect which is indigenous to all parts of the globe except the polar regions.

单选题With temperature ______ so rapidly, we could not go on with the experiment.

单选题根据下面资料，回答下列各题。Scientists have long tried to be able to know more about floods.So far， the best that scientists can do is to recognize the conditions for flooding. Although deep snow alone seldom cause

单选题The world's population continues to grow. There now are about 4 billion of us on the earth. That could reach 6 billion by the end of the century and 11 billion in another 75 years. Experts long have been concerned about such growth. Where will we find the food, water, jobs, houses, schools and health care for all these people? A major new study shows that the situation may be changing. A large and rapid drop in the world's birth rate has taken place during the past 10 years. Families generally are smaller now than they were a few years ago. It is happening in both developing and industrial nations. Researchers said they found a number of reasons for this. More men and women are waiting longer to get married and are using birth control devices and methods to prevent or delay pregnancy. More women are going to school or working at jobs away from their homes instead of having children. And more governments, especially in developing nations, now support family planning programs to reduce population growth. China is one of the nations that has made great progress in reducing its population growth. China has already cut its rate of population growth by about one half since 1970. China now urges each family to have no more than one child. And it hopes to reach zero population growth, the number of births equaling the number of deaths, by the year 2000. Several nations in Europe already have fewer births than deaths. Experts said that these nations could face a serious shortage of workers in the future. And the persons who are working could face much higher taxes to help support the growing number of retired people.

单选题The test was ________ difficult that she had problems finishing it on time