单选题From thousands of kilometers above our earth, a communications satellite ______ a signal from one side of the world and relays it directly to the other.

单选题The school was named ______the hero who gave his life for the cause of the revolution.

单选题It ______ last night. But I am not sure. A. may rain B. might rained C. must rain D. may have rained

单选题The writer was always looking for suitable ______ to use in his next story. A. contents B. articles C. pages D. ideas

单选题Once upon a time, _____ known by the name of Rip Van Winkle.

单选题I can"t keep ______ the teacher who speaks so fast.

单选题Many private institutions of higher education around the country are in danger. Not all will be saved, and perhaps not all deserve to be saved. There are low-quality schools just as there are low-quality businesses. We have no obligation to save them simply because they exist. But many thriving institutions that deserve to continue are threatened. They are doing a fine job educationally, but they are caught in a financial difficulty, with no way to reduce rising costs or increase revenues (收入) significantly. Raising fees doesn"t bring in more revenue, for each time fees go up, the enrollment (注册人数) goes down, or the amount that must be given away in student aid goes up. Schools are bad businesses, whether public or private, not usually because of bad management but because of the nature of the business. They lose money on every customer, and they can go bankrupt either from too few students or too many students. Even a very good college is a very bad business. It is such colleges thriving but threatened, that I worry about. Low enrollment is not their chief problem. Even with full enrollments, they may go under. Efforts to save them, and preferably to keep them private, are a national necessity. There is no basis for arguing that private schools are bound to be better than public schools. There are plentiful examples to the contrary. Anyone can name state universities and colleges that rank as the finest in the nation and the world. It is now inevitable that public institutions will be dominant, and therefore diversity (多样性) is a national necessity. Diversity in the way we support schools tends to give us a healthy diversity in the forms of education. In an imperfect society such as ours, uniformity of education throughout the nation could be dangerous. In an imperfect society, diversity is a positive good. Eager supporters of public higher education know the importance of keeping private higher education healthy.

单选题Improvements of all kinds ______ in television so that reception will be as close to perfect as possible.

单选题This project is said ______ right now and so far everything is going on quite smoothly.

单选题Listen to me, child, an honest boy mustn't______lies.

单选题Most children need encouragement in time of failure __________ they can cheer up again.

单选题I don"t think it is any use ______ this matter any further.

单选题W: How did you do with your essay for Professor Black Scott? M: ______

单选题The famous actor is familiar ______ every American, young and old. A. with B. to C. about D. on

单选题(I'll) (go back home) (as soon as) school (will be) over.

单选题Being watched by a lot of people, Alison felt very nervous, _____ what to say.

单选题For many overseas Chinese, China is their real ______, because they were born and grew up there. A. home B. family C. house D. household

单选题Because she gates dishonesty, she is __________ her son．

单选题He won the scholarship. He ______ hard these terms.

单选题He's perfectly content living in a hut and paint pictures all day. A. content B. living C. paint D. all day