n-type Si can be used for forming the Gunn diodes.

更多“The following trade terms（）can be used only for sea or inland waterway transport”相关的问题

第1题

Most characters in O’Neill’s works are shown as _________________, yet all of them are baffled and hurt in a hostile world.

A、seeking material success in society

B、seeking meaning and purpose in life

C、seeking respect and reputation in career

D、seeking love and passion in family

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第2题

Have you wished for a magic pill or magic formula that would let you live happily forever? If you have, don’t feel alone! It’s a very common, natural wish that has a long history.Spanish explorers of the sixteenth century even tried to find a fountain of youth in what is now the state of Florida.The water the this legendary fountain, which no one has yet found, was believed to restore youth and good health to those who drank it.

Biologists today don’t expect that anyone will find a magical fountain of youth.Growing older is a natural part of the life cycle that can’t be reversed.As human beings grow older, organs such as the heart and lungs may stop functioning properly.Sight and hearing may become weak.And the human body becomes more likely to come down with serious illnesses from which it cannot recover.

Considered together, changes that bring about the decline of an organism are called aging.Because of aging, many biologists believe that there may be a maximum age limit to which even the healthiest organisms can live.For human beings, this maximum age limit is about 110 years.

Perhaps the most important thing that you can learn from your study of human biology is that you have a lot of control over the aging process in your own life.In fact, within our control are many physical and mental factors that have much to do with aging.For example, each of us, as recent research indicates, can do many things to help prevent heart and vessel disease, which causes half the death each year in the United States.We can avoid eating a lot of fatty meat.Eating too much of these types of animal fats can lead to the clogging and hardening of blood vessels.We can cut back on smoking and hopefully quit entirely.We can limit the amount of alcohol we drink and the amount of sugar we eat.We can exercise regularly and strengthen the heart and other organs.And we can remember to take time out each day for ourselves, time just relax.Exercise, recreation and relaxation all reduce stress – inner tension that is hard on all body organs.

One final thing we can do is to try to keep aware of advances made in health education.Information is often available free of charge from health clinics or schools.

1.Which of the following is the leading cause of death in the United States?

A.Heart disease.

B.Cancer

C.Alcohol

D.Smoking

2.What happens as people grow older?

A.They dream of a magic pill to help them live a happy and long life

B.They come down with serious illnesses

C.Their organs become weak and may stop working properly

D.Their blood vessels become clogged

3.In the opinion of biologists, _________.

A.the aging process can be reversed

B.the aging process can be controlled and slowed down

C.the aging process can be got rid of

D.the aging process can go beyond its limit

4.We can slow down the weakening of all our body organs by ______.

A.not eating animal fat

B.limiting drinking and smoking

C.exercise, recreation and relaxation to reduce stress

D.preventing the clogging and hardening of blood vessels

5.Besides physical and mental factors, which of the following also contributes to living a long and healthy life according tot the passage?

A.Health education

B.Traditional medicine

C.artificial organs

D.The invention of magic pills

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第3题

In the southeastern Chinese island, Taiwan, in the spring morning, Gaoshan girls will put on beautiful costumes and invite their friends to play on the swing under the big trees, which they call “Miaomian” (meaning flying high to the sky). They take this game to express their pursuit of_______.

A、happiness

B、career

C、love

D、money

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第4题

UMTS denotes the basic WCDMA system.

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第5题

I don’t think the charge for overhauling the equipment is excessive in _____ to itssi

I don’t think the charge for overhauling the equipment is excessive in _____ to its

size.

A.correspondence

B.proportion

C.dimension

D.measurement

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第6题

It was a normal Monday morning at a meeting, and the old headmaster was addressing the students on important things in life and about 36 ourselves to what is important to us.This is how the story went:

An old man lived in a certain part of London, and he would wake up every morning and go to the 37He would get the train right to Central London, and then sit at the street comer and 38 .He would do this every single day of his life.He sat at the same street comer and begged for almost 20 years.

His house was dirty, and a stench came out of the house and it smelled 39 .The neighbors could not 40 the smell anymore, so they called the police officers to 41 the place.The officers 42 down the door and cleaned the house.There were small bags of 43 all over the house that he had 44 over the years.

The police counted the money, and they soon realized that the old man was a 45 .They waited outside his house in anticipation (预料) to 46 the good news with him.When he arrived home that evening, he was met by one of the officers who told him that there was no 47 for him to beg any more as he was a rich man now, a millionaire.

He said 48 at all; he went into his house and locked the door.The next morning he woke up as usual, went to the street and continued to beg.

49 , this old man had no great plans, dreams or anything 50 for his life.We learn nothing from this story other than staying 51 the things we enjoy doing: commitment(信奉).

We should remain true to our course, which may mean devoting yourselves to things that people around you would 52 disapprove of.Let nothing distract us from being happy, let nothing else determine our fate, but 53.

What makes us happy is 54 matters in the end…not what we acquire (获得).

This particular story is one such lesson that I will never forget.Every time I don't concentrate on course, I get reminded 55 this story.

36.A.attracting

B.agreeing

C.believing

D.devoting

37.A.street

B.factory

C.subway

D.airport

38.A.beg

B.wait

C.attempt

D.evaluate

39.A.pleasant

B.horrible

C.endless

D.serious

40.A.explain

B.forget

C.judge

D.tolerate

41.A.clear

B.remove

C.control

D.inspect

42.A.put

B.took

C.knocked

D.cut

43.A.rubbish

B.money

C.waste

D.food

44.A.managed

B.stole

C.arranged

D.collected

45.A.millionaire

B.gentleman

C.boss

D.gift

46.A.satisfy

B.share

C.believe

D.report

47.A.need

B.doubt

C.chance

D.result

48.A.something

B.anything

C.everything

D.nothing

49.A.Clearly

B.Actually

C.Surprisingly

D.Suddenly

50.A.fortunate

B.possible

C.significant

D.worth

51.A.acted out

B.called on

C.turned to

D.focused on

52.A.normally

B.crazily

C.finally

D.completely

53.A.others

B.the others

C.ourselves

D.some

54.A.when

B.that

C.what

D.which

55.A.with

B.of

C.on

D.from

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第7题

Guests need to fill in the laundry list if they have any laundry.

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第8题

You are an accounts assistant for Klemspeck Solutions, a company that sells computer equipment. The following transactions took place on 23 January 20X1: $ (1) Cash sale of goods to Customers A Davis 200 (2) Credit sale of goods to Customer H Tyre 150 (3) Return of goods from Customer B Rudd 30 (4) Payment to supplier Z Computers 900 (5) Purchase invoice from supplier Z Computers 150 (6) Purchase of stationary with petty cash 10 Which of the above transactions would be recorded in the cash book?

A、1 and 4

B、4 and 6

C、1, 4 and 6

D、3, 4 and 6

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第9题

Descriptive research describes the characteristics of objects, people, or organizations.

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