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Scientists have not come close to understanding all the different kinds of life on the planet, but US researcher Craig Venter is already working on creating the first artificial（人造的）life.

Venter and his researchers made a breakthrough late last month, They successfully moved the DNA of one type of bacteria(细菌) to a yeast cell（酵母）, changed it, then put it into another bacterial cell.

“Bacteria have systems that protect them from foreign DNA” Venter explained to the BBC, In the experiment, the team managed to block this system.

The experiment was performed on a simple type of bacteria celled mycoplasma mycoides. The team took the bacteria’s genes and put them into a yeast cell.

Putting a DNA in a yeast cell allowed the team to change the genes in this case, taking out a gene that was not necessary for the bacteria to live.   

They then put the gene into a host bacteria cell. The cell went on to divide normally, producing new healthy bacteria.

In January, the team created artificial genes of a new type of bacteria. Their next goal is to put the artificial DNA into a host cell to create a new species, according to a report in Science magazine.

“lf we don’t make any errors, I think it should work and we should have the first artificial species by the end of the year.” Venter said in the report.

The first artificial life form is likely to be a simple man-made bacteria, to prove that the technology can work.. But that form will be followed by more complex bacteria that turn coal into cleaner natural gas, or algae  that can take in carbon dioxide and change it into fuel.

Many scientists think it’s good news to have this artificial life, but others are worried that the technology to create new organisms might end up in the wrong hands, with dangerous result.

57．Which of the following is true according to the text ?

A  Bacteria have systems that protect them from yeast cell.

B  If we put a gene into a host bacteria cell,the cell will not go on to divide as usual.

C  Venter and his researchers completely achieved all their goals.

D  All the scientists didn’t agree to this artificial life.

58. What can we learn from the underlined sentences?

A. Venter and his researchers had succeeded in this project.

B. Venter predicted that they would make errors in the future,so he decided to give it up.

C. Venter would go on the study and he was full of confidence.

D. Venter was a clearer man but a little shy.

59. Which of the following shows the order of the passage ?

 1.change the genes

2. put the gene into a host bacteria cell

3. moved the DNA of one type of bacteria to a yeast cell

4. The cell went on to divide normally

5. put it into another bacteria cell

A. 3-5-1-4-2     .               B. 3-5-1-2-4   C. 4-2-5-1-3                      D. 2-3-5-1-4

60.What will be mentioned in the next paragraph?

A. The wrong hands that created by the artificial life.

B. The advantages and disadvantages about the artificial life.

C. The future about this project.

D. The author’s attitude.

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The secretary was so careless while writing the report that she ______some important data.

A came across  B cut out  C  put aside  D  left out

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It ________ me that I could buy the admission ticket of the exhibition at the discount of 50% with my student card, ________ made me extremely excited.

A. happened to; that             B. occurred to; it

C. happened to; which          D. occurred to; which

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I was really anxious about you. You ______home without a word.

A. mustn’t leave   B. shouldn’t have left    C. couldn’t have left  D. needn’t leave

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 Considering the injuries he's had, there can be little_______of him winning the race.

A. explanation    B. expectation       C. qualification       D. presentation

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 _______ , the firemen put all the fires out quite quickly.

     A. Sadly    B. Hopefully     C. Unfortunately    D. Thankfully

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Many animals recognize their food because they see it. So do humans. When you see an apple or a piece of chocolate you know that these are things you can eat. You can also use other senses when you choose your food. You may like it because it smells good or because it tastes good. You may dislike some types of food because they do not look, smell or taste very nice. Different animals use different senses to find and choose their food. A few animals depend on only one of their senses, while most animals use more than one sense.

Although there are many different types of food, some animals spend their lives eating only one type. The giant panda（大熊猫）eats only one particular type of bamboo（竹子）. Other animals eat only one type of food even when given the choice. A kind of white butterfly（蝴蝶）will stay on the leaves of a cabbage, even though there are plenty of other vegetables in the garden. However, most animals have a more varied diet（多样化饮食）. The bear eats fruits and fish. The fox eats small animals, birds and fruits. The diet of these animals will be different depending on the season.

Humans have a very varied diet. We often eat food because we like it and not because it is good for us. In countries such as France and Britain, people eat foods with too much sugar. This makes them overweight, which is bad for their health. Eating too much red meat and animal products, such as butter, can also be bad for the health. Choosing the right food, therefore, has become an area of study in modern life.

59. We can infer from the text that humans and animals _________.

   A. depend on one sense in choosing food     B. are not satisfied with their food

   C. choose food in similar ways              D. eat entirely different food

60. Which of the following eats only one type of food?

   A. The white butterfly.    B. The small bird.    C. The bear.    D. The fox.

61. Certain animals change their choice of food when ___________.

   A. the season changes                B. the food color changes

   C. they move to different places        D. they are attracted by different smells

62. We can learn from the last paragraph that __________.

   A. food is chosen for a good reason          B. French and British food is good

   C. some people have few choices of food  D. some people care little about healthy diet

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第二节（共5小题；每小题2分，满分10分）

根据短文内容， 从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    71    Lots of people aren’t satisfied with their present weight, but most people aren’t sure how to change it. You may want to look like the models, actresses or actors in magazines or on TV, but those goals might not be healthy or realistic for you .     72   

So what should you do about your weight control?

     73     The best way to find out if you are at a healthy weight or if you need to lose or gain weight is to go to see a doctor or dietitian（营养学家) for advice. They will compare your weight with healthy standards and help you set goals. If it turns out that you can benefit from weight loss, then you can follow a few of the simple suggestions listed below to get started.

      74     People who lose weight quickly by crash dieting or other extreme measures usually gain back all of the pounds they lost, because they haven’t completely changed their habits. Therefore, the best ways of weight management are those that you can keep for a lifetime.

Small changes are a lot easier to stick with than big ones. Try reducing the size of what you eat.     75     Once you have that down, start gradually introducing healthier foods and exercise into your life.

All in all, it’s a good idea to keep a healthy weight because it’s just that: healthy.

A. Try giving up regular soda for a week.

B. Try to mind what you eat and stop when you’re full.

C. Weight management is about long-term success.

D. In addition, no magical diet will make you look like someone else.

E. Being healthy is really about being at a weight that is right for you.

F. Changing from whole to nonfat or low-fat milk is also a good idea.

G. Weight loss is a hard topic.

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Michael Jordan, best known as__top scorer in ______NBA, did much charity work for society.

A. a, a           B. the, the         C. a, /          D. /, the

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 Now my hometown is not at all _______ a traveler who visited it ten years ago can expect.

   A. that              B. what                C. which                D. where