单选题That tree, ______ branches are almost bare, is a very big and old one.

单选题

单选题Instead of going into details about his project, he spoke ______.

单选题Since then I______ the mail. A. am expecting B. have expected C. was expecting D. have been expecting

单选题You'd like that, ______? A. don't you B. didn't you C. hadn't you D. wouldn't you

单选题Professor Wu told us that by the end of the year he ______ here for three years.

单选题The plural forms of the words radio and hero are ______. A. radioes and heroes B. radios and heroes C. radioes and heros D. radios and heros

单选题

单选题Humanity uses a little less than half the water available worldwide. Yet occurrences of shortages and droughts(干旱) are causing famine and distress in some areas, and industrial and agricultural by-products are polluting water supplies. Since the world" population is expected to double in the next 50 years, many experts think we are on the edge of a widespread water crisis. But that doesn"t have to be the outcome. Water shortages do not have to trouble the world—if we start valuing water more than we have in the past. Just as we began to appreciate petroleum more after the 1970s oil crises, today we must start looking at water from a fresh economic perspective. We can no longer afford to consider water a virtually free resource of which we can use as much as we like in any way we want. Instead, for all uses except the domestic demand of the poor, governments should price water to reflect its actual value. This means charging a fee for the water itself as well as for the supply costs. Governments should also protect this resource by providing water in more economically and environmentally sound ways. For example, often the cheapest way to provide irrigation(灌溉) water in the dry tropics is through small-scale projects, such as gathering rainfall in depressions(凹地) and pumping it to nearby cropland. No matter what steps governments take to provide water more efficiently, they must change their institutional and legal approaches to water sue. Rather than spread control among hundreds or even thousands of local, regional, and national agencies that watch various aspects of water use, countries should set up central authorities to coordinate water policy.

单选题When we got here, our monitor had done ______ everything.

单选题I took the umbrella with me ______ it should rain.

单选题(D) Historically, the traditional role of women of all classes in Britain had been confined (限制) to that of mother in the home. Single and childless women consequently had an uncomfortable and difficult time. The majority of women had no voting or political rights until 1928, and for centuries wives and their property had been the legal possessions of their husbands. Formal education for women was thought to be unnecessary for their role in life, and was non-existent for the majority. The female position in society became a little better in some respects towards the end of the nineteenth century, but was still very limited. However, elementary education for all was established and a few institutions of higher education began to admit women in restricted numbers. Since the 1960s, women in Britain have been fighting for greater equality with men in job opportunities and rates of pay. Various laws from the 1970s to the present have been made. In spite of all these, men remain better paid than women in many occupations, particularly in industry. Women constitute nearly half the national workforce, there are more employed married women in Britain than in any other European Community country, and some 60 percent of wives are now employed compared with 22 percent in 1951. But their average weekly wage is still only 70 percent of the average paid to men. This is true of both the manufacturing trades and the service industries. The majority of female workers are consequently badly paid and often unprotected by the trade unions or the law.

单选题

单选题A successful business certainly sells its products ______.

单选题Air pollution, together with overpopulation, ______ many problems in big cities today.

单选题There has been an ______ amount of rain in the dry area this summer.

单选题"Is Roger coming tonight?" "He said he was coming but he hasn"t ______ yet. "

单选题In order to maintain fair prices for all our customers, we analyze closely the employment and credit recordings of all our credit applicants.

单选题Not until the problem of research and development are solved can the company go further.

单选题No one doubts that economic reforms started in the early 1980s has already effected a profound change in the fabric of Chinese life. People have calmly accepted the market-oriented economy which was unthinkable many years ago and their economic and social values have changed dramatically.