Don't give yourself heavy workload.__________ as much work as you can.

A . hurt B . injured C . damaged D . hazard

A . lorry B . car C . van D . cart

A . Thanks, but I don't like the seafood B . Sorry, I can't help C . Well, fish don't suit for D . No, I can't

A . You are very kind B . Thank you C . The fish smells bad D . Yes. I will do

A . assist B . assert C . asset D . assure

A . more harmful to sea life than lighter oils B . easier to clean up than lighter refined oils C . less harmful to sea life than lighter oils D . not a real threat to marine life

A . A、我有许多帐目 B . B、我船严重横倾 C . C、我船已超载 D . D、我船有重货

A . What‘s in it? B . Can I help you to carry it. C . Whose is it? D . May I have a try.

W: I'm not nervous. I... I just hate needles, you know. Q: What is the possible relationship between the two speakers？ (13) A．Colleagues. B．Dentist and patient. C．Boss and secretary. D．Teacher and student.

(29) A．With such a big order, our side demands a discount which is 10% or over. B．At least 10% of the expenses should be devoted to solving the problem. C．Although we have spent much on the project, a 10% increase in our budget is necessary. D．We asked for a 10% discount, which has caused all the trouble on our side.

A．yet B．indeed C．though D．anyway

Stephen Spindler and his colleagues from the University of California at Riverside have found that some of an elderly mouse's liver genes can be made to behave as they did when the mouse was young simply by limiting its food for four weeks. The genetic rejuvenation won't reverse other damage caused by time for the mouse, but could help its liver metabolize drugs or get rid of toxins. Spindler's team fed three mice a normal diet for their whole lives, and fed another three on half-rations. Three more mice were switched from the normal diet to half-feed for a month when they were 34 months old—equivalent to about 70 human years. The researchers checked the activity of 11,000 genes from the mouse livers, and found that 46 changed with age in the normally fed mice. The changes were associated with things like inflammation and free radical production—probably bad news for mouse health. In the mice that had dieted all their lives, 27 of those 46 genes continued to behave like young genes. But the most surprising finding was that the mice that only started dieting in old age also benefited from 70 percent of these gene changes. "This is the first indication that these effects kick in pretty quickly," says Huber Warner from the National Institute on Aging near Washington, D.C.. No one yet knows if calorie restriction works in people as it does in mice, but Spindler is hopeful. "There's attracting and tempting evidence out there that it will work," he says. If it does work in people, there might be good reasons for rejuvenating the liver. As we get older, our bodies are less efficient at metabolizing drugs, for example. A brief period of time of dieting, says Spindler, could be enough to make sure a drug is effective. But Spindler isn't sure the trade-off is worth it. "The mice get less disease, they live longer, but they're hungry," he says. "Even seeing what a diet does, it's still hard to go to a restaurant and say: 'I can only eat half of that'." Spindler hopes we soon won't need to diet at all. His company, Life Span Genetics in California, is looking for drugs that have the effects of calorie restriction. According to the passage, which of the following is NOT true？ A．Eating less than usual might make us live longer. B．If we go on a diet when old, we may keep healthy. C．Dieting might not be needed. ~ D．We have to begin dieting from childhood.

A、tosay what B、what to say C、tosay how

A．Slow B．Slow up C．Slowly D．Slovenly

A．can"t B．don"t C．wouldn"t D．won"t

I cannot give you the information you ask for, for the simple reason()I don't know it myself. A.because of B.that C.because D.which

A．A.Thanks, but I don’t like fish B．B.Sorry, I can’t help C．C.Well, fish don’t suit for D．D.No, I can’t

A、clothes B、minds C、shoes D、places