大学英语六级
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[填空题] In addition to exercising regularly, eating a good breakfast is considered by many health experts to be a (36)______part of a successful way of reduction plan. After a night of (37)______the body needs to be replenished with nutrient in order to maintain a high level of energy (38)______. Several nutritionists suggest that dieters should (39)______to one-third of their daily calories at breakfast time. These calories should be in the form of balanced meal of (40)______food. A balanced meal consists of five key elements: Proteins, Carbohydrates, fats, vitamins and (41)______, people who’’ re dieting need a variety of foods to assure a (42)______ supply of nutrients their bodies need. If a well-balanced diet is not followed, the (43)______may become sleepy, nervous, or (44)____________. If a poor diet is (45)____________for a long period of time, the dieters may become vitamin deficient. Vitamin deficiency can cause serious health problems. For these reasons, many doctors (46)_______
[单项选择] The Real Death Of Print Vishwas Chavan travels a lot. As an informatician, he collects data on what types of animal live where in India to enter into a biodiversity database. Yet the specimens he hunts for have neither fur nor feathers, but yellowing pages and ageing dust-jackets. Much of the information Chavan seeks is in old, out of-print tomes that are scattered around the world; about 2,500 of the 7,000 books he has unearthed were written in the first half of the nineteenth century. To find them, Chavan has spent years trailing around libraries. He dreams of the day when books such as these are scanned and made available as digital files on the Internet. Chavan and other digitization visionaries paint a future in which books no longer gather dust on shelves, but exist as interconnected nodes in a vast web of stored literature, all accessible at the click of a mouse. So instead of hunting for specific books, scholars could search for
A. Y
B. N
C. NG
[单项选择] To fight against computer crimes, a computer system needs a sure way of identifying its right users and rejecting those who are not entitled to use it. The identification system should be quick, simple, and convenient. At present, signatures are widely used to identify credit card holders, but it takes an expert to detect a good forgery. Sometimes even a human expert is fooled, and there is no reason to believe that a computer could do any better. Photographs are also sometimes used for identification. But, people find it inconvenient to stop by a credit-card company and to be photographed. Companies might lose business if they made the pictures under absolute requirement. Also, photographs are less useful these days, when people frequently change their appearance by changing the way they wear their hair. Finally, computer programs for analyzing photographs are still highly experimental. Cash-drawing systems often use two identification numbers: One is recorded on a
A. Convenience.
B. Reliability.
C. Low costs.
D. Acceptability.

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