John stepped on the stage without hesitation he had been preparing for this moment all his life.A. even ifB. as ifC. as soon asD. as long as 题目和参考答案——青夏教育精英家教网—

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John stepped on the stage without hesitation ________ he had been preparing for this moment all his life.

A. even ifB. as ifC. as soon asD. as long as

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假如你是李华，你的美国笔友Mike来信询问你的家乡是否有雾霾天气，情况如何。请你按照以下提示给他回一封e-mail. 内容如下：

1. 由于大气污染程度十分严重，自去年年底以来发生数次雾霾天气。

2. 人们已经意识到雾霾天气的危害，正在采取各种措施减少其发生。

3. 你在日常生活中打算为此做些什么。

要求：

1.参考词汇：雾霾haze；雾霾天气 hazy weather

2.词数在100词左右。开头、结尾已给出，不计入总词数。

Dear Mike,

I’m glad to receive your letter, and thank you for your caring for the weather and my health. Now I’d like to tell you something about the haze.

_______________________________________________________________________________

Yours,

Li Hua

Some of the world’s most significant problems never hit headlines. One example comes from agriculture. Food riots(暴乱) and hunger make news, but the trend lying behind these matters is rarely talked about. This is the decline in the growth in yields of some of the world’s major crops. A new study by the University of Minnesota and McGill University in Montreal looks at where, and how far, this decline is occurring.

The authors take a vast number of data pointing for the four most important crops； rice, wheat, corn and soybeans. They find that on between 24 and 39% of all harvested areas, the improvement in yields that took place before the 1980s slowed down in the 1990s and 2000s.

There are two worrying features of the slowdown. One is that it has been particularly sharp in the world's most populous(人口多的) countries，India and China.

Their ability to feed themselves has been an important source of relative stability both within the countries and on world food markets. That self-sufficiency cannot be taken for granted if yields continue to slow down or reverse.

Second, yield growth has been lower in wheat and rice than in corn and soybeans. This is problematic because wheat and rice are more important as foods’ accounting for around half of all calories consumed. Corn and soybeans are more important as feed grains. The authors note that we have preferentially focused our crop improvement efforts on feeding animals and cars rather than on crops that feed people and are the basis of food security in much of the world.

The report qualifies the more optimistic findings of another new paper which suggests that the world will not have to dig up a lot more land for farming in order to feed 9 billion people in 2050, as the Food and Agriculture Organization has argued. Instead, it says, thanks to slowing population growth, land currently ploughed (耕）up for crops might be able to revert to forest or wilderness. This could happen. The trouble is that the forecast assumes continued improvements in yields, which may not actually happen.

1.Which crops are mentioned in the text?

A. Rice，corn，soybeans and wheat.

B. Rice，corn, wheat and peas.

C. Wheat，corn，soybean and potatoes.

D. Corn，wheat, tomatoes and soybeans.

2.What does the author try to draw attention to?

A. Food riots and hunger in the world.

B. The decline of the grain yield growth.

C. News headlines in the leading media*

D. The food supply in populous countries.

3.Why does the author mention India and China in particular?

A. Their self-sufficiency is vital to the stability of world food markets.

B. Their food yields have begun to decrease sharply in recent years.

C. Their big populations are causing worldwide concerns.

D. Their food self-sufficiency has been taken for granted.

4.What does the underlined word “revert” mean in the last paragraph?

A. grow worse

B. put in the place of another

C. gain through experience

D. go back to a previous state

Earthquake in Japan.Donald Trump is accused of planting story about actress’s height after she rejected him. Mexico arrests ex-police chief in case of 43 missing students. Do you really need to know all these things?

Three years ago, I began an experiment. I stopped reading all newspapers and magazines. Televisions and radios were rejected. I deleted the news apps from my iPhone. I didn’t touch a single free newspaper and deliberately looked the other way when someone tried to offer me any such reading material. The first weeks were hard. Very hard! I was constantly afraid of missing something. But after a while, I had a new understanding. The result after three years: clearer thoughts, more valuable ideas, better decisions, and much more time. And the best thing? I haven’t missed anything important.

A dozen reasons exist to give news a wide berth. Here are the top three: First, our brain reacts differently to different types of information. Shocking, people-based, fast-changing details all appeal to us. News producers capitalize on this. The result: Everything complex, abstract, and profound(深刻的) must be systematically singled out, even though such stories are much more relevant to our lives and to our understanding of the world. As a result, we walk around with a misrepresented mental map of the risks and threats we actually face.

Second, news is irrelevant. In the past year, you have probably consumed about ten thousand pieces of news. Be very honest: Name one of them, just one that helped you make a better decision—for your life, your career, or your business—compared with not having this piece of news. No one I have asked has been able to name more than two useful news stories—out of ten thousand. News organizations claim that their information gives you a competitive advantage. Too many fall for this. If news really helped people advance, journalists would be at the top of the income pyramid.

Third, news is a waste of time. An average human being spends half a day each week reading about current affairs. This is a huge loss of productivity. Take the 2008 terror attack in Mumbai. Let’s say a billion people viewed the minute-by-minute updates and listened to the chatter of a few “experts” and “commentators.” Thus our conservative calculation: One billion people multiplied by an hour’s distraction equals one billion hours of work stoppage. News wasted around two thousand lives—ten times more than the attack.

I would predict that turning your back on news will benefit you as much as removing any of the other ninety-eight errors we have covered in the pages of this book. Read long background articles and books. Nothing beats books for understanding the world.

1.How did the author feel at the beginning of his experiment?

A. He was in constant fear.

B. He enjoyed it very much.

C. He had a better vision about life.

D. He missed his friends and relatives.

2.What does the underlined phrase in Paragraph 3 probably mean?

A. Refuse to read news.

B. Select newscarefully.

C. Question news.

D. Help circulate news.

3.In the author’s opinion, news ________.

A. represents a competitive advantage

B. offers a mental map of the world

C. leads to a loss of productivity

D. brings journalists’ income up

4.What’s the main purpose of writing the passage?

A. To offer tips on choosing news.

B. To advocate giving up reading news.

C. To share experiences on avoiding news.

D. To criticize media’s misleading choice of news.

You ________ give me a lift. I want to walk home for exercise.

A. needn’tB. couldn’tC. can’tD. mustn’t

The teacher decided to give the task to ________ had a strong sense of responsibility.

A. whoeverB. whicheverC. whateverD. whenever

Every year billions of pounds are spent on hair loss treatment. If we succeed in curing hair loss with 3D printed hair follicles(毛囊), it will be a huge revolution.

L’Oreal, the cosmetics firm is partnering with a French bio-printing company called Poietis, which has developed a form of laser(激光) printing for cell-based objects. Poietis’ technique begins with the creation of a digital map that determines where living cells and other tissue components should be placed to create the desired biological structure. This involves how the cells are expected to grow over time. The file based on the digital map is then turned into instructions for the printing equipment, so that it can lay down tiny droplets made out of the cell-based "bio ink" one layer at a time. The printing process involves bouncing a pulsing laser off a mirror and through a lens, so that when it hits a ribbon(色带) containing the bio ink, a droplet of the matter falls into place. About 10,000 of these micro-droplets are created every second.

It typically takes about 10 minutes to print a piece of skin 1cm wide by 0.5mm thick. However, since hair follicles are complex and consist of 15 different cells in a structure, they may take longer.

Poietis is not the only company working on bio-printing, but most others use another way, which involves pushing a bio-ink through a nozzle(喷嘴), rather than lasers to build their tissue. Poietis suggests its technique puts less stress on the biological matter, meaning there is less risk of causing it damage.

Alopecia UK—a charity that provides support and advice about hair loss—has mixed feelings about the development. “It is encouraging to know that companies such as L’Oreal are investing in technology that may help those with hair loss in the future,” said spokeswoman Amy Johnson.

“However, we would suggest it’s still very early to be getting excited about what this potentially could mean for those with medical hair loss. At this point it is unclear as to whether this technology could benefit those with all types of hair loss.”

“Also, if this new technology does lead to a treatment option, given the high costs of existing hair transplant procedures, how many people will be able to realistically afford any new technological advances that may become available? As with any other research and development into processes that may be able to help those with hair loss, we watch with great interest.”

1.What does Paragraph 2 mainly tell us?

A. How the printing process is carried out.

B. Where the living cells should be placed.

C. How long the cells are expected to grow.

D. What the printing equipment is made up of.

2.What does the underlined word “it” in Paragraph 4 refer to?

A. hair follicleB. biological matter

C. nozzleD. bio-ink

3.The passage implies that the new technology may ______.

A. meet some practical challenges

B. help people with hair loss at present

C. offer solutions to all problems of hair loss

D. cost a large sum of money to transplant hair

4.What is Amy Johnson’s attitude towards the new technology?

A. Disapproving.B. Optimistic.

C. Cautious.D. Negative.

—What a drive! I’m tired out.

—No wonder! You have been driving for such a long time ________ taking a break.

A. byB. withoutC. throughD. in

Have you ever received a gift that was so dearly, not your taste that you wondered if perhaps it had been handed to you by mistake? Worse, have you ever given a present and watched your friend look as though she had opened the wrong box? Maybe she responded with a polite "Why, thank you," but you knew you had missed the mark. Why do presents sometimes go wrong? And what do your choices (good and bad) reflect about your personal qualities?

Choosing the right gift is an art, I believe. It calls for empathy — the ability to put yourself into someone else's head and heart. We're all able to do this; in fact, we're born with a kind of natural empathy. After the earliest period of childhood, however, it needs to be reinforced (加强) — by our parents, teachers, friends. When it isn't, we're not able to understand other people's feelings as sharply. This can show in the gifts we select, and so can many other emotional (情感的) qualities.

Think back to the presents you’ve given over the past year, the time and effort you put into your selection, how much you spent, your thoughts while you were shopping, and your feelings when the receiver opened the package. Keep in mind that what you choose displays your inner world. (Of course, you may express yourself differently with different friends, relatives, and other people you know.)

We live in a society where exchanging presents is an important part of communication. Ignoring the tradition won't make it go away. If you really dislike such a tradition, tell your friends ahead of time.

1.The underlined expression "you had missed the mark" means "you had failed to ________.

A. make her feel better

B. keep your friendship

C. get the expected effect

D. receive a present in return

2.Which of the following is the main idea of the second paragraph?

A. Natural empathy needs to be reinforced.

B. Emotional changes influence one's choice of gifts.

C. Selecting the right gift is an ability people are born with.

D. Choosing gifts requires one to understand the receivers.

3.In the third paragraph, the author tells us that ________.

A. the choice of gifts reflects one's emotional qualities

B. one learns from what he did in the past

C. attention should be paid to the receivers' responses

D. one should spend more time choosing gifts

4.The best possible title for this passage is “________”.

A. Ways of Choosing GiftsB. An Important Tradition

C. Exchanging PresentsD. Message in a Gift

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