单选题It is useful to be able to predict the extent _______ which a price change will influence supply and demand.

单选题Conceptual meaning is not______

单选题It was not a serious accident, the car needs only some ______ repairs.

单选题Which of the following most accurately describes the pattern of the passage?

单选题The science teacher Udemonstrated/U the process of turning solid gold into liquid.

单选题Jim was late for two classes this morning. He said that he forgot both of the ______.

单选题Our new house is very ______ for the office as I can get there in five minutes.

单选题The foreign minister would reveal nothing about his recent tour of the Middle East beyond what had already been announced at the press conference.

单选题—Is this raincoat yours? —No, mine ______ there behind the door. A) hangs B) has hung C) is hanging D) hung

单选题We didn't know his telephone number, otherwise we ______ him. A. had telephoned B. must have telephoned C. would telephone D. would have telephoned

单选题 One of the most interesting paradoxes in America today is that Harvard University, the oldest institution of higher learning in the United States, is now engaged in a serious debate about what a university should be, and whether it is measuring up (符合标准). Like the Roman Catholic Church and other ancient institutions, it is asking—still in private rather than in public—whether its past assumptions about faculty, authority, admissions, courses of study, are really relevant to the problems of our society. Should Harvard—or any other university—be an intellectual sanctuary, apart from the political and social revolution of the age, or should it be a laboratory for experimentation with these political and social revolutions; or even an engine of the revolution? This is what is being discussed privately in the big clapboard (楔形板) houses of faculty members around the Harvard Yard. The issue was defined by Walter Lippmann, a distinguished Harvard graduate, many years ago. 'If the universities are to do their work, ' he said, 'they must be independent and they must be disinterested... They are places to which men can turn for unbiased judgments. Obviously, the moment the universities fall under political control, or under the control of private interests, or the moment they themselves take a hand in politics and the leadership of government, their value as independent and disinterested sources of judgment is impaired...' This is part of the argument that is going on at Harvard today. Another part is the argument of the militant and even many moderated students: that a university is the keeper of our ideals and morals, and should not be 'disinterested' but activist in bringing the Nation's ideals and actions together. Harvard's men of today seem more troubled and less sure about personal, political and academic purpose than they did at the beginning. They are not even clear about how they should debate and resolve their problems, but they are struggling with them privately, and how they come out is bound to influence American university and political life in the 21st century.

单选题People who cannot ______ between colours are said to be colourblind.

单选题 The tutor tells the undergraduates that one can acquire ______ in a foreign language through more practice.

单选题Landslides triggered by heavy rainfall Uimpeded/U our best attempts at rescuing the victims.

单选题By the time you get back, great changes______ in this area.

单选题______ by the hero"s example, the soldiers fought more bravely.

单选题I cannot ______ you a good post.

单选题The company management attempted to ______ information that was not favorable to them, but it was all in vain. A. supplement B. suppress C. plug D. concentrate