单选题There is so much work ______ today. Would you be kind enough to lend me a hand?

单选题No sooner had he gone to bed than he fell ______.

单选题We like our English teacher because she often tells __________ funny stories in class.

单选题Data processing is a series of operations carried out on data to get information. 1 series of operations is also called the data processing cycle. Data are a group of facts called the input (输入). The data may be numbers, letters, or symbols 2 may or may not be related. The information is the end, result or the output. Information is data that have been processed. It is 3 a brief, usable form. The operations are performed with different tools. A computer is 4 kind of data processing tool. The brain is also a data processing tool. The brain is like a small, personal computer that controls all bodily and mental 5 . Data, or input, enter the brain through the senses (sight, smell, touch, taste and hearing). The data are 6 by the brain, and the result is information. The information or output may cause physical and mental reactions such as body movements, decisions, or ideas. How does the brain tell an apple 7 an orange? If the brain could not process data, this would not be possible. Apples and oranges differ in looks, feel, smell, and taste. The brain can tell these differences. The 8 in input help the brain to decide which is the apple and which is the orange. There are three levels of processing data. 9 level uses different tools. Some levels require less human effort than others. The three levels are manual data processing, electromechanical data processing and electronic data processing. In manual data processing, the brain, hands, and simple tools such as pencils and paper 10 . Electromechanical data processing uses electrically operated machines. Examples of the types of machines which are used are desk calculators and typewriters. Electronic data processing uses electronic computers that process data at a very high speed.

单选题Have you checked all the CDs ______ to the mountainous area next week?

单选题Not until Columbus discovered America ______ to Europe.

单选题You must do what works for you, not ______ what works for other people.

单选题I wrote him a letter to show my ______ of his thoughtfulness. A. expectation B. congratulation C. attention D. appreciation

单选题The novel ended happily, and the young couple was married__________.

单选题Taste is such a subjective matter that we don't usually conduct preference tests for food. The most you can say about anyone's preference, is that it's one person's opinion. But because the two big cola(乐饮料)companies--Coca- Cola and Pepsi Cola are marketed so aggressively, we've wondered how big a role taste preference actually plays in brand loyalty. We set up a taste test that challenged people who identified themselves as either Coca- Cola or Pepsi fans: Find your brand in a blind tasting. We invited staff volunteers who had a strong liking for either Coca - Cola Classic (传统型) or Pepsi, Diet(低糖)Coke, or Diet Pepsi. These were people who thought they'd have no trouble telling their brand from the other brand. We eventually located 19 regular cola drinkers and 27 diet cola drinkers. (80)Then we fed them four unidentified samples of cola one at a time, regular colas for the one group, diet versions for the other. We asked them to tell us whether each sample was Coke or Pepsi; then we analyzed the r6cords statistically to compare the participants' choices with what mere guess - work could have accomplished. Getting all four samples right was a tough test, but not too tough, we thought, for people who believed they could recognize their brand. In the end, only 7 out of 19 regular cola drinkers correctly identified their brand of choice in all four trials. The diet - cola drinkers did a little worse--only 7 of 27 identified all four samples correctly. While both groups did better than chance would predict, nearly half the participants in each group made the wrong choice two or more times. Two people got all four samples wrong. Overall, half the participants did about as well on the last round of tasting as on the first, so fatigue, or taste burnout, was not a factor. Our preference test results suggest that only a few Pepsi participants and Coke fans may really be able to tell their favorite brand by taste and price.

单选题Visitor: Thank you very much for your care while I am at Cambridge. Host: ______. I'm glad you enjoyed the visit. A. Never mind B. No thanks C. My pleasure D. Goodbye

单选题The clouds had spread and nearly ______ the entire sky.

单选题A tunnel would be ______.

单选题I didn't know your mobile phone number; otherwise I ______ you the moment I got to Washington. A. had rung B. would ring C. have rung D. would have rung

单选题Of those ______ had applied for the jobs, only two were accepted.

单选题This instrument is ________that one.

单选题We usually______hello to each other when we meet.

单选题______ purpose did you say their team would beat ours?

单选题You can't hear what I'm saying ______ you stop talking.