Ladies and gentlemen, please remain __________ until the plane has come to a complete stop.

A. seated     B. seating    C. to seat    D. seat

 

阅读下面短文,从短文后各题所给的四个选项(A、B、C、D)中,选出最佳选项。

During the month of September, a dear friend of mine lost her husband suddenly in an accident．The tragedy was a  36  to everyone. When I got the news，I drove home  37  that we just don’t know when a loved one is   38  going to be with us. We sometimes take our loved ones  39 ，and we expect that they will be with us forever. __40 , as we all know, life does not work that  41  and sometimes we get a wake-up call that shocks us and makes us realize how  42  life is.

    In comforting her at the funeral, I tried to imagine if I were in her  43    ，how I would feel.

    As I was leaving the  44 , I ran into Marilyn, who has been a true friend to me over the years. When she asked me how my job was, I started  45   things through. I was having a  46  week with my job and I was telling her how I was feeling. She listened to me as I was shouting my  47 , then without saying a word, she took her hands and  48  them on my face, and said to me, “But at least you had a day.”

    The  49  of her hands on my cheeks, the  50   in her voice, and the words she spoke, “BUT AT LEAST YOU HAD A DAY”, hit me like a ton of  51  . All the frustrations, all the stress that was _52  inside me came to a complete  53 .

    Since that day，when I start feeling  54 . I remind myself of Marilyn's words--but at least I had a day! Things could be a lot  55  sometimes, but I am alive and I have a lot to be thankful for.

36.	A.symbol	B.punishment	C.shock	D.morning
37.	A.knowing	B.imagining	C.admiring	D.realizing
38.	A.for the moment	B.no longer	C.for ever	D.sooner or later
39.	A.for granted	B.for mistake	C.for instance	D.for example
40.	A.Therefore	B.Anyhow	C.Meanwhile	D.However
41.	A.way	B.manner	C.method	D.direction
42.	A.long	B.easy	C.tough	D.short
43.	A.situation	B.position	C.condition	D.direction
44.	A.meeting	B.funeral	C.reception	D.gathering
45.	A.cutting	B.breaking	C.talking	D.putting
46.	A.stressful	B.wonderful	C.inspiring	D.rewarding
47.	A.successes	B.happiness	C.frustrations	D.emotions
48.	A.turned	B.placed	C.attached	D.flashed
49.	A.touch	B.light	C.knock	D.smell
50.	A.blame	B.coldness	C.calmness	D.pleasure
51.	A.feathers	B.clothes	C.grains	D.bricks
52.	A.building up	B.breaking up	C.opening up	D.bringing up
53.	A.existence	B.surprise	C.stop	D.decision
54.	A.annoying	B.proud	C.pleased	D.stressed
55.	A.better	B.worse	C.lighter	D.heavier

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.
【小题1】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

【小题2】What’s the meaning of the underlined word “devil” in paragraph 3?

A．Problem

B．Advantage

C．Invention

D．Technique

【小题3】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.

 

All too often , a choice that seems sustainable（可持续的）turns out on closer examination to be problematic. Probably the best example is the rush to produce ethanol（乙醇）for fuel from corn . Corn is a renewable resource —you can harvest it and grow more, almost limitlessly. So replacing gas with corn ethanol seems like a great idea .

One might get a bit more energy out of the ethanol than that used to make it, which could still make ethanol more sustainable than gas generally, but that’s not the end of the problem. Using corn to make ethanol means less corn is left to feed animals and people, which drives up the cost of food. That result leads to turning the fallow land — including, in some cases, rain forest in places such as Brazil — into farmland, which in turn gives off lots of carbon dioxide（CO₂）into the air. Finally, over many years, the energy benefit from burning ethanol would make up for the forest loss. But by then, climate change would have progressed so far that it might not help.

You cannot really declare any practice “sustainable” until you have done a complete lift-cycle analysis of its environmental（环境的）costs. Even then, technology and public policy keep developing, and that development can lead to unforeseen and undesired results. The admirable goal of living sustainable requires plenty of thought on an ongoing basis.

1.What might directly cause the loss of the forest according to the text?

A. The growing demand for energy to make ethanol.

B. The increasing carbon dioxide in the air.

C. The greater need for farmland.

D. The big change in weather.

2.The underline word “it” in the second paragraph refers to “              ” .

A. the energy benefit               B. the forest loss

C. climate change                  D. burning ethanol

3.The author thinks that replacing gas with corn ethanol is               .

A. impractical   B. acceptable    C. admirable    D. useless

4.What does the author mainly discuss in the text?

A. Technology.                   B. Sustainability.

C. Ethanol energy.                D. Environmental protection.

 

Perhaps a parent’s most important contribution toward raising a trustful child is to develop a relationship founded on trust. A child of any age will feel proud and grown-up if parents frequently show their trust. In court a defendant(被告) is innocent until proved guilty. But in the family, a teenager “defendant” is too often assumed guilty.

Even when the child is caught in a complete lie, this should not be the end of trust. A parent can tell a child that a single lie is forgivable. Yet it should be clear that if lies continue, the child, like the boy who cried wolf, will suffer loss of trust.

When my wife and I discovered that our son Tom, then 13, had lied about throwing a party while we were away, we grounded him for a month. We also told Tom that we could no longer trust him, and we could not allow him to stay alone overnight again. This loss of freedom was an important lesson; he learned how hard it is to live with people when they don’t trust him. As a result, now more than three years later we can again trust Tom to stay alone overnight.

Parents must always remember there is no easy answer to this universal problem of lying. We can set a good example, allow for privacy, monitor friendship, develop trust and punish wrong doing, but still we discover our child has lied to us. Finally that’s why there is a need for trust on both sides of a parent-child relationship. Lying destroys closeness and friendship. For that reason, parents should always try to give a child the feeling that they can be trusted with the truth. Parents may start with a child’s trust, but as the child grows older, parents must earn it.

1.When the writer and his wife discovered that their son had lied, they _________.

A. took all his freedom from him

B. decided never to trust him again

C. forbade him to stay alone overnight

D. arranged him to stay at home.

2.We can infer from the passage that very often ________.

A. parents don’t trust their child as they should

B. defendants are usually proved not guilty in court

C. parents have too much trust in their child

D. some children are founded guilty in court

3.According to the passage, the writer believes that _____________.

A. parents shouldn’t punish their children even if they lie

B. it is not easy to deal with the problem of lying as parents

C. there are effective ways to prevent children from lying

D. children will stop telling lies as they grow up