Always read the ________ on the bottle carefully and take the right amount of medicine.

       A. instructions                     B. explanations             C. descriptions                     D. introductions

．Children are not recommended to see such films___________bad for their mental development.

       A．that is            B．that are          C．as are         D．as is

It’s already 10 o’clock. I wonder how it        that she was two hours late on such a short trip.

       A．came over B．came out   C．came about      D．came up

A Battery’s Nightmare

Portable electronics that can be carried about easily are only as good as their batteries (电池) and, let’s face it, batteries aren’t very good, especially when compared with, say, petrol, which packs 100 times a battery’s energy into an equal space. That’s why a large group of mechanical engineers (centered at the Massachusetts Institute of Technology, but with partners at other universities and companies) are hard at work in an effort to replace batteries with a tiny engine that runs on fuel. Imagine a battery-free life! When the fuel runs out in your mobile phone, you just fill up and go.

The engine---about the size of a ten-cent coin---starts with a combustion chamber (燃烧室) that burns hydrogen. Its tiny parts are etched (蚀刻) onto silicon wafers (硅片) in the same manner that computer parts are etched onto integrated circuits (集成电路). The first engine is made up of five wafers. And since these wafers could be produced in much the same way as computer chips, they could probably be produced quite cheaply.

But the devil in all this nice detail is efficiency. Tiny engine parts don’t always behave like the bigger parts of the first engine. Something between the parts can slow down the works, according to Columbia University Professor LucFrechette, one of the engine’s designers. Extreme heat from the combustion chamber is also a problem, often leaking to other parts of the engine.

The scientists’ goal is to create an engine that will operate 10 times better than batteries operate. Frechette says that a complete system, with all parts in place and working, will be set up in the next couple of years, but commercial models aren’t likely until at least the end of the next ten years.

According to the passage, the title suggests that _______ .

A. batteries should be greatly improved

B. petrol will be used instead of batteries

C. the time of batteries will be gone forever

D. pollution problems caused by batteries must be solved

What’s the meaning of the underlined word “devil” in paragraph 3?

A. Problem     B. Advantage     C. Invention     D. Technique

What can we infer from the passage?

A. The new invention doesn’t need any fuel.

B. The new engine has been produced in large quantities.

C. The new invention is much cheaper than the battery.

D. The new engine needs to be improved before it’s on sale.

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

What is your favourite colour? Do you like yellow, orange, red? ___71___. Do you prefer greys and blues? Then you are probably quiet, shy, and you would rather follow than lead. You tend to be a pessimist（悲观主义者）. At least, this is what psychologists tell us, and they should know, because they have been seriously studying the meaning of colour preference, as well as the effect that colours have on human beings. ___72___ . If you happen to love brown, you did so, as soon as you opened your eyes, or at least as soon as you could see clearly.

___73___. A yellow room makes most people feel more cheerful and more relaxed than a dark green one; and a red dress brings warmth and cheer to the saddest winter day. ___74___ . A black bridge over the Thames River, near London, used to be the scene of more suicides(自杀) than any other bridge in the area---until it was repainted green. The number of suicide attempts immediately fell sharply. Perhaps it would have fallen even more if the bridge had been done in pink or baby blue.

___75___. It is an established fact that factory workers work better, harder, and have fewer accidents when their machines are painted orange rather than black or grey.

A. On the other hand, black is depressing.

B. They tell us, among other facts, that we do not choose our favourite colour as grow up --- we are born with our preference.

C. The rooms are painted in different colours as you like.

D. If you do, you must be an optimist, a leader, an active person who enjoys life, people and excitement.

E. Light and bright colours make people not only happier but more active.

F. Life is like a picture or a poem, full of different colours.

G. Colours do influence our moods---there is no doubt about it.

The biggest whale is ___ blue whale, which grows to be about 29 meters long—the height of _____ 9-story building.

A. the; the      B. a; a      C. a; the     D. the; a

_________ wants to enter for the match should reach the given standard.

A. Anyone                 高*考*资*源*网  B. The one              C. Whoever         D. Who

.

What lessons China can draw from________global financial crisis has become ________ hot topic among us students..

A. the; a                B. 不填; a                C. a; the                    D. 不填; the

.

He spoke very slowly, but he still didn’t get his meaning _______.

     A. across        B. cross              C. through             D. though

.

 The lion is considered the king of the forest , for it is a(n)________ of courage and power.

    A. example    B. sign   C. mark    D. symbol