单选题He said the pain had grown worse on their ______ to the hospital.

单选题The most urgent thing is to find a dump for those {{U}}toxic{{/U}} industrial wastes.

单选题Researchers built the calculating difference engine according to Babbage's design in order to show that______.

单选题You'd better take these documents with you __ you need them for the meeting. 

单选题---What was the weather like yesterday?---Terrible .It rained（）.I could（）go out.

单选题 Economically speaking, are we better off than we were ten years ago? Twenty years ago? In their thirst for evidence on this issue, commentators seized on the recent report by the Census Bureau, which found that average household income rose by 5.2% in 2015. Unfortunately, that conclusion puts too much weight on a useful, but flawed and incomplete, statistic. Among the more significant problems with the Census's measure are that: 1) it excludes taxes, transfers, and compensation like employer-provided health insurance; and 2) it is based on surveys rather than data. Even if precisely measured, income data exclude important determinants of economic well-being, such as the hours of work needed to earn that income. While thinking about the question, we came across a recently published article by Charles Jones and Peter Klenow, which proposes an interesting new measure of economic welfare. While by no means perfect, it is considerably more comprehensive than average income, taking into account not only growth in consumption per person but also changes in working time, life expectancy, and inequality. Moreover, it can be used to assess economic performance both across countries and over time. The Jones-Klenow method can be illustrated by a cross-country example. Suppose we want to compare the economic welfare of citizens of the U.S. and France in 2005. In 2005, as the authors observe, real consumption per person in France was only 60% as high as the U.S., making it appear that Americans were economically much better off than the French on average. However, that comparison omits other relevant factors: leisure time, life expectancy, and economic inequality. The French take longer vacations and retire earlier, so typically work fewer hours: they enjoy a higher life expectancy, presumably reflecting advantages with respect to health care, diet, lifestyle, and the like; and income and consumption are somewhat more equally distributed there than in the U.S. Because of these differences, comparing France's consumption with the U.S.'s overstates the gap in economic welfare. Similar calculations can be used to compare the U.S. and other countries. For example, this calculation puts economic welfare in the United Kingdom at 97% of U.S. levels, but estimates Mexican well-being at 22%. The Jones-Klenow measure can also assess an economy's performance over time. According to this measure, as of the early-to-mid-2000s, the U.S. had the highest economic welfare of any large country. Since 2007, economic welfare in the U.S. has continued to improve. However, the pace of improvement has slowed markedly. Methodologically, the lesson from the Jones-Klenow research is that economic welfare is multi-dimensional. Their approach is flexible enough that in principle other important quality-of-life changes could be incorporated—for example, decreases in total emissions of pollutants and declines in crime rate.

单选题 Questions10-12 are based on the passage you have just heard.

单选题Usually he managed to find plenty of work to ______ him over hard times. I think it is a good idea.

单选题We are writing to the manager ______ the repairs recently carried out at the above address.

单选题The board has ______ some rules that every member of the club must follow.

单选题The decline in moral standards, which has long concerned social analysts, has at last______the attention of average Americans.

单选题Analysts don't think that______.

单选题The police accused him of setting fire to the building but he denied ______ in the area on the night of the fire. A. to be B. to have been C. having been D. be

单选题The middle-aged woman has been ______ with a serious illness for half a year; she is dying now. A. laid down B. laid off C. laid up D. laid in

单选题Being a salesman, the most important thing is to understand people. You"ve got to know what they"re thinking. If you can figure that out, you can get them to do a lot. They come in with an idea about what they want. You get them talking about themselves, about what they like. If it"s a man, you talk about football, or something like that. If it"s a woman, you ask her about fashions. That way they get comfortable with you. You ask them a lot of questions and get them saying yes. Then they just get into the habit of saying yes. In the end, you can put them into anything you want, if you"re really good. For example, if they need a little car for the city, you send them home a truck. Of course, I wouldn"t really do that. It wouldn"t be right. You"ve got to sell on this job, but you also have to be fair. It"s not fair to take advantage of people too much. There are some people in this business who"d do anything. But I don"t believe in that.

单选题He is a (well-known) hardworking and clever student, and he often gets top (scores) in his class; so all his classmates (are sure) that he (studies very hardly).

单选题I remember the whole thing ______ it happened yesterday.

单选题The house______on the edge of the town will be their villa.

单选题We're ______ by mosquitoes up here in the north in summer. A. infested B. infected C, swarmed D. plagued