单选题Don't go there. They will have you ______ a lot of money.

单选题If you don' t know how to ________, you' d better look it up in a dictionary.

单选题It hardly seems ______that your son has grown so tall in one year.

单选题Internet(因特网) use seems to cause a decline(下降) in psychological(心理的) health, which is reported by a study. Even people who spent just a few hours a week on the Internet felt more depression(沮丧) and loneliness than those who spent little time on the Internet, the two-year study showed. And it wasn't that people who were already feeling bad spent more time on the Interact, but that using the Internet seems to cause the bad feelings. Scientists are surprised at the results, which were quite different from what they thought before. They thought that the Internet would make people psychologically healthier than TV, since on the Internet users are free to choose their information and to communicate(交流) with others. However, the scientists also said, when people spend a lot of time or even ,all the day time on the Internet, there is no time left for them to be with their family and friends. They can't have real conversations. Another possible reason is that people can see the outside world on the Internet and it makes them less satisfied(满意的) with their lives. "But it's important to remember this is not about the Internet itself; it's about how it is used ," one of the scientists says.

单选题Whoisansweringthephone?

单选题—______ my mother is very busy, she always checks my homework.—she is always strict with you. A. But B. Although C. So

单选题很多美国人对有关食物的多数危险持极度歪曲、夸张的观点。马萨诸塞一阿姆赫特大学食品科学及营养系主任佛卡斯·克拉斯代尔直率地说，如果被细菌污染的鸡肉的危险像一些人认为的那样大，大街上就会到处躺满中毒的人。虽然公众越来越要求安全食品，但世界上没有这样的东西。伯克利的加利福尼亚大学生物化学系主任布鲁斯·阿密兹指出，一棵植物中多达10%的重量是天然杀虫剂。他说：“植物没有嘴和牙齿来保护自己，它们就使用化学战。”许多自然生成的化学物质虽然量很小，但实验室化验却证明是强致癌物——可引起癌症的物质。如果用食品添加剂的标准来衡量，蘑菇就会被禁止食用。康奈尔大学的营养学家克利斯蒂娜·斯达克断言：“我们从食物中获得的天然化学物质比任何人造的东西都糟糕得多。” 然而问题并不那么简单。尽管美国人没理由害怕坐在餐桌旁，但他们完全有理由要求食物和饮水安全有明显改进。他们不知不觉地、不情愿地吸收了大量各种各样的危险化学物。要是食物中已经含有天然致癌物，再加上几十种新的人造致癌物就不大明智了。虽然大多数人能抵抗食物和水里的少量污染物，但至少一些少数人会因吃喝的东西而患癌症。为使食物和供水质量更高，政府需提高管理标准，严格检查计划并强化执行政策。食品工业应该修改某些人们长期接受的做法，或采用危险较小的做法。最重要的也许是消费者将不得不学习如何正确处理和烹制食物。需要解决从田间到加工场、再到厨房的整个食品供应过程中的全部问题。

单选题It is estimated that some seven hundred million people—about half of the world"s population are unable to read and write, and there are probably two hundred and fifty million more people whose level of attainment is so slight that it barely outlives a literacy. Recently the attack on illiteracy (文盲) has been stepped up. A world plan has been drawn up by a committee of UNESCO experts in Paris, as part of the United Nations Development Decade, and an international conference on the subject has the aim. People must learn the basic skills of responsible citizenship: the ability to read notices, newspapers, timetables, letters, pricelists, to keep simple records and accounts, to sort out the significance of the information gathered, and to fill informs. The major areas of illiteracy are in Asia, Africa, and Central and South America. In Africa there are at least one hundred million illiterates, compromising (牵连) eighty to eighty-five per cent of the total population. In Europe the figure is about twenty-four million, most of them in Southern Europe, with Spain, Italy, Portugal, and Yugoslavia heading the list (the United Kingdom has about seven hundred thousand).

单选题Who is Tom?

单选题Whereistheboyfrom?A.America.B.Australia.C.China.

单选题The boy's new name is Butch.

单选题What are they talking about?

单选题Not so long ago, in many countries, children went to school wearing a school uniform. Boys" wore a white shirt and a tie, a dark jacket, gray pants and black shoes. Girls used to wear a white blouse and a dark, knee - length skirt. Today, in many countries, students have a very different kind of uniform. They wear tennis shoes, jeans, and a T-shirt. On a hot day students might even come to class in a pair of shorts. Teachers in the past would never have allowed these students into their class. Then, the men teachers used to wear a suit and tie, and most women teachers wore a dress or skirt. But when you look inside a classroom today, it is sometimes difficult to tell who are the teachers and who are the students! People from hot sunny countries often find it difficult to imagine how people who live in a very cold climate can live and work through the winter months. These people manage because they know what to wear in the cold. First, it is very important to keep your head, hands and feet warm. So everyone has a hat, thick gloves to keep their hands warm, and a pair of long socks and heavy boots for their feet . Of course, you should have a heavy overcoat and you should wear a thick wool sweater under it. A scarf around the neck also helps to keep out the cold. What you wear under your clothes is important, too. People who live in cold climates always wear long underwear. Long underwear may not be very comfortable, but it certainly keeps your legs warm!

单选题By the end of the ______ century(世纪，百年) ,computers may be seen in every home. A. twenty-first B. twenty-oneth C. twentieth-one

单选题There are some ______ on the glass.

单选题Ally and Steven's eldest child enjoys after-school program very much.

单选题My grandpa does morning exercise in order to ______.

单选题In the end ______.