题目内容

What a bargain！The price of this dress is_______ that of the skirt．

A．half not as much as

B．much not as half as

C．not half as much as

D．as much as not half

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— It’s difficult for corrupt officials to hide abroad nowadays.

— That’s it! The Chinese government will do _______ it takes to get them back.

A. whatever B. whoever C. whichever D. wherever

He is never satisfied with what he has got. The grass is always greener on the other side of the ____.

A. road B. fence C. wall D. garden

_____ underground for 2 years, David says the worst thing is not the danger but the darkness.

A. Working B. Having worked

C. To have worked D. Worked

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（），并在其下面写出该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下画一横线，并在该词下面写出修改后的词，

注意：1．每处错误及其修改均仅限一词。

2．只允许修改10处，多者（从第11处起）不计分。

Li Hua has been living in the city with his parents after he was born. During the past Spring Festival, his parents take him back to their hometown in the countryside for the first time, it made them all happy, especially his grandparents. He enjoyed staying with his grandparents as well as ran in the open air. He took a lot of pictures of the things that seemed strangely and new. He shared his pictures with his friends in the city on Internet. They showed great interest in one of the picture, arguing that he must be about a new kind of hamburger they hadn’t tasted yet. Some friends wouldn’t wait any longer and called on him for answer. After answered several calls, Li Hua quit their QQ group.

Can people change their skin colour without suffering like pop king Michael Jackson? Perhaps yes．Scientists have found the gene that determines skin colour．

The gene comes in two versions, one of which is found in 99 per cent of Europeans．The other is found in 93 to 100 per cent of Africans, researchers at Pennsylvania State University report in the latest issue of Science．

Scientists have changed the colour of a dark-striped zebrafish to uniform gold by inserting a version of the pigment(色素) gene into a young fish．As with humans, zebrafish skin colour is determined by pigment cells, which contain melanosomes(黑色素)．The number, size and darkness of melanosomes per pigment cell determines skin colour．

It appears that, like the golden zebrafish, light-skinned Europeans also have a mutation(变异) in the gene for melanosome production．This results in less pigmented skin．

However, Keith Cheng, leader of the research team, points out that the mutation is different in human and zebrafish genes．

Humans acquired dark skin in Africa about 1．5 million years ago to protect bodies from ultra-violet rays(紫外线) of the sun, which can cause skin cancer．

But when modern humans leave Africa to live in northern latitudes, they need more sunlight on their skin to produce vitamin D．So the related gene changes, according to Cheng．

Asians have the same version of the gene as Africans, so they probably acquired their light skin through the action of some other gene that affects skin colour, said Cheng．

The new discovery could lead to medical treatments for skin cancer．It also could lead to research into ways to change skin colour without damaging it like chemical treatment did on Michael Jackson．

1.What is the main idea of the passage?

A． People can’t change their skin colour without any pain．

B． The new discovery helped find ways to change skin colour safely．

C． Pop king Michael Jackson often changed his skin colour as he liked．

D． Scientists have found out that people’s skin colour is determined by the gene．

2.It can be inferred from the passage that ________．

A． nowadays changing the skin colour with the chemical treatment has bad effect

B． Europeans and Africans have the same genes

C． the new discovery could help to find medical treatments for skin cancer

D． there are two kinds of skin genes

3.Scientists have done an experiment on a dark-striped zebra fish in order to ________．

A． find the different genes of humans

B． prove the humans’ skin colour is determined by the pigment gene

C． find out the reason why the Africans’ skin colour is dark

D． find out the ways of changing people’s skin colour

4.Which of the following statements is TRUE?

A． Michael Jackson died of skin damage caused by chemical treatment．

B． American blacks produce more vitamin D with their skin than others．

C． The gene determining skin colour exists widely in whites, blacks and Asians．

D． The melanosomes in the skin of blacks usually cause skin cancer more often．

Out of the train_______, well-dressed and waving to the crowd.

A． a tall man stepped

B． was stepping a tall man

C． did a tall man step

D． stepped a tall man

________ I came, the city wasn’t so beautiful.

A. For the first time B. At the first time

C. The first time when D. The first time

Many gardeners believe that “talking” to their plants helps them grow---it turns out that they may not be crazy after all. According to the scientists from the University of Exeter, plants may keep communicating with each other through a secret “unseen” language.

For their experiment, the scientists picked a cabbage plant that is known to send out a gas when its surface is cut. In order to get video evidence of the communication, they changed the cabbage gene by adding the protein---luciderase(虫荧光素酶), which is what makes fireflies(萤火虫) glow in the dark.

When the changed cabbage plant was in full bloom, they cut a leaf off with a pair of scissors, and almost immediately, thanks to the luciderase, they could see the plant sending out “methyl jasmonate(茉莉酸甲酯)”.

While this was a known fact, what was surprising was the fact that the minute this gas began to give out, the nearby cabbage plants seemed to sense some kind of danger and started to send out a gas that they normally have to keep predators(捕食者) like caterpillars(毛虫) away.

What the scientists are not sure is whether the plants are trying to warn the other leaves or the near plants about the danger---something that will require further research However, the team, which is led by Professor Nick Smirnoff, is quite excited about the findings because this is the first time it has been proved that plants do not live a passive life, but actually move, sense and even communicate with each other.

However, before you get all concerned, they are quite sure that plants do not feel the pain when they are cut, since they do not have nerves---so go ahead and bite into that juicy carrot!

1.What’s the best title of the passage?

A. Plants Can Send Some Gas

B. Plants Can Communicate with Each Other

C. The “Unseen” Language of Plants

D. Plants Can’t Feel Pain

2.What does the underlined word “they” in Paragraph 1 mean?

A. Gardeners B. Plants

C. Scientists D. Fireflies

3.When the plant sent out methyl jasmonate, which of the following statements is NOT TRUE?

A. The nearby cabbage plants seemed to sense some kind of danger.

B. The nearby cabbage plants started to send out a gas.

C. The nearby cabbage plants tried to warn the near plants.

D. The nearby cabbage plants communicated through a secret language.

4.According to the experiment, plants ________________.

A. don’t live a passive life

B. can feel pain when they are cut

C. can warn the other leaves about danger

D. can talk with each other

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