单选题He went to work on foot yesterday, though he ______ by bus. A. could have gone B. should have gone C. would go D. must have gone

单选题 Many current discussions of immigration issues talk about immigrants in general, as if they were abstract people in an abstract world. But the concrete differences between immigrants from different countries affect whether their coming here is good or bad for the American people. The very thought of formulating immigration laws from the standpoint of what is best for the American people seems to have been forgotten by many who focus on how to solve the problems of illegal immigration. It is hard to look for 'the ideal outcome' on immigration in the abstract. Economics professor Milton Friedman once said, 'The best is the enemy of the good,' which to me meant that attempts to achieve an unattainable ideal can prevent us from reaching good outcomes that are possible in practice. Too much of our current immigration controversy is conducted in terms of abstract ideals, such as 'We are a nation of immigrants.' Of course we are a nation of immigrants. But we are also a nation of people who wear shoes. Does it follow that we should admit anybody who wears shoes? The immigrants of today are very different from those who arrived here a hundred years ago. Moreover, the society in which they arrive is different. To me, it is better to build a wall around the welfare state than the country. But the welfare state is already here—and, far from having a wall built around it, the welfare state is expanding in all directions. We do not have a choice between the welfare state and open borders. Anything we try to do as regards immigration laws has to be done in the context of a huge welfare state that is already a major, inescapable fact of life. Among other facts of life utterly ignored by many advocates of de facto amnesty(事实上得大赦) is that the free international movement of people is different from free international trade in goods. Buying cars or cameras from other countries is not the same as admitting people from those countries or any other countries. Unlike inanimate objects, people have cultures and not all cultures are compatible with the culture in this country that has produced such benefits for the American people for so long. Not only the United States, but the Western world in general, has been discovering the hard way that admitting people with incompatible cultures is an irreversible decision with incalculable consequences. If we do not see that after recent terrorist attacks on the streets of Boston and Lon-don, when will we see it? 'Comprehensive immigration reform' means doing everything all together in a rush, without time to look before we leap, and basing ourselves on abstract notions about abstract people.

单选题The book might well have ______ had it been less expensive. A. worked out B. gone through C. caught on D. fitted in

单选题People are ______to smoke at a gas station.

单选题He ______ me to go to the store and get some milk.

单选题It costs a student nothing to run an account provided that ______.

单选题In 1986 the country Uinitiated/U restrictions on the use of pesticides.

单选题If you find this item too difficult to __________ ,it is advisable to leave as it is and move on to the next one.

单选题Tommy: Mommy, when will we have dinner? I'm starving.Mother: ______. We have to wait for daddy.

单选题It can be concluded from the passage that the spirit of the progressive movement is the spirit ______.

单选题Although the city acquired modernizations of (a more recent) kind during the twentieth century, (its) 15resent appearance (took shapes) during (the nineteenth).

单选题There are few electronic applications _____to raise fears regarding future employment opportunities than robots.

单选题—Cars moved very slowly in the 1920's.—Yes, but they ______ move more quickly than 1910.

单选题The new power plant is reported ______ within three years. A. having been completed B. to have been completed C. to have completed D. to complete

单选题Although most universities in the United States are on a semester system which offers classes in the fall and spring, some schools ______ a quarter system comprised of fall, winter, and summer quarters.

单选题Many cities in the southern part of the United States have difficulty ______ traffic flowing when it snows. A. kept B. keeping C. to keep D. in being kept

单选题Certainly man must ______ the future, and find ways of providing for his use. A. look to B. look up C. look for D. look on

单选题The advantage claimed for repeating fairy stories to young children is that it ______.

单选题My wife ______an old dictionary last night. A. came on B. came off C. came out D. came up

单选题Shaken by two decades of virtual anarchy, the majority of people were ready to buy __________ at any price.