This year’s children’s party, some parents were invited to, was a great success.A. whichB. whyC. whoseD. where 题目和参考答案——青夏教育精英家教网—

题目内容

This year’s children’s party, ________ some parents were invited to, was a great success.

A. whichB. whyC. whoseD. where

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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

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

Get a Custom（定制的） Salt Shaker for your Dining Table

If you are looking for custom salt shaker for your dining table, then there are a number of varieties available from which you can have your pick.

Get custom salt shakers for custom seasoning

A wooden salt shaker has a beautiful design that can enrich your dining table. It is handmade from different pieces of wood of varying sizes. It has a pear shaped body with a ceramic(陶瓷的) grinder with fancy wood finish. The ceramic grinder for making salt into powder is built to last a life time. It does not wear away like metals do when used to grind salt. It is an extremely beautiful and very delicately made gift to be given to anybody. If you buy two pieces they offer you a generous quantity of Himalayan salt.

Ceramic salt shakers for custom Seasoning

A ceramic salt shaker is handmade and ideal to be kept in the kitchen to keep the cooking area neat and orderly. It is available in different colors, olive green, coffee brown, purple, egg blue, yellow and many more colors. You can use your fingers when you require a pinch of salt or use the spoon that accompanies it. It looks beautiful for kitchen use and can be given as a gift.

Personalized salt shakers that can be given as anniversary gifts

If you are looking for handmade anniversary gifts that you would like to give to your friends, you can give hand painted salt shakers. You can send your pictures and the makers will paint the picture of your friend and her loved one. Any message you like to add will be written on the salt shaker.

This cannot be put in a dishwasher or soaked in water. It has to be washed carefully by hand. If you are a person who likes eco-friendly items then you can have a salt shaker made of bamboo. It has a solid construction which makes it ideal for kitchen setting.

So if you are interested in buying a salt shaker for your table, you can choose one from above and order it.

1.If you prefer salt powder, you may choose ________.

A. a wooden salt shakerB. a bamboo salt shaker

C. a ceramic salt shakerD. a hand painted salt shaker

2.According to the passage, ceramic salt shakers are distinct in ________.

A. shapes.B. designsC. coloursD. sizes

3.What can we learn from the passage?

A. Salt shakers with a solid construction can last a life time.

B. Hand painted salt shakers can be washed in dishwashers.

C. Bamboo salt shakers are harmless to the environment.

D. Metal salt shakers are painted with personal pictures.

4.The passage is intended to ________.

A. promote different salt shakers

B. tell how to choose salt shakers

C. describe the advantages of salt shakers

D. persuade people to give salt shakers to friends

—Would you like to have some ice-cream?

—I’d like to, but I'm on a diet ________ weight.

A. loseB. to loseC. being lostD. lost

Frank ________ stamps in his spare time. It’s his hobby.

A. is collectingB. collects

C. collectedD. was collecting

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

阅读下面材料，在空白处填入适当的内容或括号内单词的正确形式。

On keeping a Diary in English

Keeping a diary in English is one of the 1.__ __ (effect) ways to improve our English writing ability.

2._____ (compare) with other forms of writing, it is shorter and takes 3.____ time. It can help us to develop the habit of thinking in English. 4._____ we persist in this practice, gradually we’ll learn how to express ourselves in English. In keeping a diary in English, we certainly run up against many 5.__ __（difficult）. In the first place, 6.___ often happens that we have trouble 7._______(find) appropriate words and phrases to give expression to our mind. Secondly, there are many idiomatic ways of saying things in Chinese. And it is extremely hard for us to put them into English properly.

As far as I 8._ __ (concern), my suggestion is that we should always have a notebook and a Chinese-English dictionary within easy reach. Whenever something beats us, we can first put it down in our notebook and then consult our dictionary. We can also turn to our English teacher for help, if necessary. In short, I believe that it is 9._____ great use to keep a diary in English for 10._____ development of our writing skills.

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