单选题Upon returning to the classroom, ______. A. a letter was on the desk B. he found a letter on the desk C. a letter was found on the desk D. the desk had a letter on it

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单选题According to the passage, all the damage listed below could be done by a hacker EXCEPT ______.

单选题Hardly______at the office when the telephone rang.

单选题If a person doesn't care，or doesn't make up his mind to cast his eyes down，he can never learn any thing about this country． A．没有眼睛向下的兴趣和决心，他是永远学不会这个国家的任何东西。 B．没有眼睛向下的兴趣和决心，一辈子也不会真正了解这个国家的事情。 C．如果他不在乎，不下决心眼睛向下，他永远不会学习有关这个国家的任何事情。 D．如果他不在乎，不下决心把眼光向下扫，他学不会有关这个国家的任何事情。

单选题The doctor insisted that the patient ______ at once.

单选题Peace and development are the main themes of the times, an era full of both hope and challenges. A. 和平与发展是时代的主题，这个时代既充满希望，也充满着挑战。 B. 和平与发展是时代的主题，这是个充满希望与挑战的时代。 C. 多次讨论和平与发展这个主题，讨论充满了希望和挑战。 D. 时代的主题是和平与发展，同时这个时代充满了希望和挑战。

单选题Walking is the easiest and simplest form of exercise. By putting one foot in front of the other, you can start to walk your ways towards a healthier lifestyle. Walking is an easy way to challenge the cardiovascular system (心血管系统), while at the same time building muscles. But to achieve these goals, a little more than a gentle walk around the block is required. Walking actually burns as many calories (卡路里) as running the same distance—if done in the correct manner and at a reasonable pace (步伐). Start with a basic program that you can complete three or four times a week. This should include five main steps: —A beginning warm-up for about 5 minutes. —A little bit faster period of 5 minutes at medium level (中等速度). —A 10-minute "burning" at a high level. —A 5-minute slow down period at a medium level. —A 5-minute cool down period at a low level again. A suitable walking pace of around 5 kilometers per hour will burn around 80 calories in 30 minutes.

单选题What is the position offered by Derse Exhibits?

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单选题His mother, as well as his father, ______ in this hospital. A.work C.works B.working D.be worked

单选题What does the word "cold-calling" most probably mean?

单选题I'd like to buy an expensive camera. Well, we have several models ______ A. to be chosen B. to be chosen from C. choosing from D. for choose

单选题It is impossible to______ the news unless you read the newspaper.A) catch up withB) put up withC) keep up withD) look up with

单选题The teacher asked students ______.

单选题Attention, please. Nobody is allowed to ______ when Mr. Smith makes his speech.

单选题Which of the following statements could fully express the author's view towards physicians' payment in the USA'?

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单选题John is an American boy. His family is in China now. John likes chocolates (巧克力) very much. But his mother doesn't give him. She doesn't think they are good for him. But John has a very nice uncle. The old man loves him very much, and sometimes he buys some chocolates for John. Then his mother lets John eat them. She wants to make the old man happy. It is John's birthday on Friday. On Thursday evening, John says, "Please, God (上帝) ,make them give me a box of chocolates for my birthday. ' His mother says, "God can't hear you, my boy." "I know, but my uncle is in the next room, and he can hear me./

单选题He gave her some beautiful roses ______ her kindness.