单选题The Anti-Japanese War ______ in 1937 and it ______ eight years. A. was broken out...lasted B. broke out...lasted C. broke...remained D. had been broken out...kept

单选题How we ______ a chance to visit your great country! A. looked for B. longed for C. waited for D. went for

单选题It ______ ten years since you left me.

单选题"You didn't hear me until now? No, I __________ soundly when you came in."

单选题Most recent opinion polls suggest that the between the two parties has narrowed.

单选题For more than thirty years scientists have been searching for signs of life on other planets. Most of these searches have been done over the radio. The hope is that someone in outer space may be trying to get in touch with us. Scientists also have sent radio and television messages, as well as messages on spaceships traveling through space, on the chance that someone may be receptive to such messages. Scientists are using powerful radio telescopes to "listen" to signals from about 1,000 stars, all within 100 light years of the earth. In addition, they will scan the entire sky to listen for radio messages from more distant stars. Using a computer, they will be able to monitor more than eight million channels at a time. Scientists are looking for any signal that stands out from the background noise. Of the 200 billion stars in the Milky Way galaxy, scientists find that five percent of the stars are like our sun. Perhaps half of them have a planet like the earth. Such a planet would be a reasonable distance from the star for the temperatures to be right for the evolution of life. Believing that there are the inhabitable (that can be lived in) planets in our galaxy, most scientists agree that chances are that one or more of these planets support some life. However, many scientists wonder whether intelligent life exists on other planets. Some believe that thirty years of searching without any intelligent messages show that no one is out there. They say that the evolution of intelligence comparable to ours is unlikely. (44) Other scientists believe that our search hasn't been long enough to rule out the possibility that intelligent life exists in our galaxy. Although our sun family is only about five billion years old, our galaxy is about 20 billion years old. In that time some scientists think it is likely that civilizations are much more advanced than ours. Perhaps these civilizations send us no signals; perhaps we have not recognized the signals they have sent us. If we hope to find intelligent life, these scientists believe that we have to keep looking.

单选题During the ______ the audience strolled and chatted in the lounge.

单选题Only residents here enjoy the ______ of using this parking lot.

单选题I don't doubt ______ he'll come.

单选题I'd rather you ______ anything about this matter this evening.

单选题Let children learn to judge their own work. A child learning to talk does not learn by being corrected all the time: if corrected too much, he will stop talking. He notices a thousand times a day the difference between the language he uses and the language those around him use. Bit by bit, he makes the necessary changes to make his language like other people's. (78) In the same way, children learn to do all the other things without being taught--to walk, run, climb, whistle, ride a bicycle---compare their own performances with those of more skilled people, and slowly make the needed changes. But in school we never give a child a chance to find out his mistakes and correct them for himself. We do it all for him. We act as if we thought that he would never notice a mistake unless it was pointed out to him, or correct it unless he was made to. Let him work out, with the help of other children if he wants it, what his word says, what the answer is to that problem, whether this is a good way of sayingor doing this or not. If it is a matter of right answers, as it may be in mathematics or science, give him the answer book. Let him correct his own papers. Why should we teachers waste time on such routine work? Our job should be to help the child when he tells that he can' t find the way to get the right answer. (79) Let the children learn what all educated persons must some day learn, how to. measure their own understanding, how to know what they know or do not know.

单选题Mary (must be) over 30 (now); it's (about) time she (should get married).A. must beB. nowC. aboutD. should get married

单选题Several (people) in the crowd seemed (as) they were fighting (for) a (ticket).

单选题She sent her application to the university last week, but ______ any response up to now. A. didn't receive B. weren't receiving C. hadn't received D. hasn't received

单选题Speaker A: Well, Mary, just remember this—money is nothing to me. Speaker B: I know—but if you have been hungry and have no money to buy your food, ______. A. you'll think differently B. you won't think differently C. you'1l think indifferently D. you won't think the other way

单选题______ it or not, his discovery has created a stir in scientific circles. A. Believe B. To believe C. Believing D. Believed

单选题Which of the following could be the best title for this article?

单选题The meeting began two hours ago, but so far no decision _____.