Have you ever wondered ______ there are so many natural disasters across the world in 2010?

     A. which it is that                      B. what is it that    

C. how it is that                         D. why it is that

英语是同学们非常熟悉的学科。请你写一篇文章，内容如下：

 1．阐述学英语的必要性。

 2．你能采取哪些措施提高英语成绩。

 注意：

1.    词数不少于120个；

2.    可适当发挥想象，增加细节，以使行文连贯；

To save class time, our teacher has ______ students  do half of the exercises in class and complete the other half for our homework

A. us             B. we           C. our          D. ours

If you are unable to attend the interview, for _____ reason, you should inform us immediately.

   A. whatever           B. what             C. whichever         D. which   

____ English is concerned, he is the best in our class.

A. As far as    B. As soon as   C. Now that   D. As

How do you feel after you've stayed up late to finish schoolwork? Or the day after a slumber party? Scientists now say that your answers to these questions may depend on your genes.

     Genes are stretches of DNA that work like an instruction manual for our cells. Genes tell our bodies and brains what to do. People have about 40,000 genes, and each gene can have different forms. So, for example, certain forms of some genes make your eyes blue. Other versions of those genes make your eyes brown.

In a similar way, new research suggests that a gene called period3 affects how well you function without sleep. The discovery adds to older evidence that period3 helps determine whether you like to stay up late or get up early.

The period3 gene comes in two forms: short and long. Everyone has two copies of the gene. So, you may have two longs, two shorts, or one of each. Your particular combination depends on what your parents passed on to you.

Scientists from the University of Surrey in England studied 24 people who had either two short or two long copies of period3. Study participants had to stay awake for 40 hours straight. Then, they took tests that measured how quickly they pushed a button when numbers flashed on a screen and how well they could remember lists of numbers.

Results showed that the people with the short form of period3 performed much better on these tests than the people with the long form did. In both groups, people performed worst in the early morning. That's the time when truck drivers and other night-shift workers say they have the most trouble concentrating.

After the first round of experiments, participants were finally allowed to sleep. People in the group that performed well on the tests took about 18 minutes to nod off.

People with the long period3 gene, by contrast, fell asleep in just 8 minutes. They also spent more time in deep sleep. That suggests that people with the long form of the gene need more and deeper sleep to keep their brains working at top form.

We can know from the passage that genes can not ________.

 A. tell our bodies and brains what to do

 B. make our eyes blue or brown

 C. decide how well you work without sleep

 D. ensure whether you’re good at driving

Which of the following statements about the period3 is wrong?

 A. It affects whether you like to stay up late or get up early.

 B. It comes in two forms: short and long.

 C. One has either two longs or two shorts of it.

 D. Your parents determine what particular combination you have.

People with the short form of period3__________.

 A. need to go to bed early and get up early

 B. can work better than the people with long form of period3 without sleep

 C. take less time to fall asleep after they stay up late

 D. need more and deeper sleep to keep their brains working at top form

What’s the best title of the passage?

A. The Period3 Gene                           B. The Function of Genes

 C. Wake up, Sleepy Gene                                D. Stay up Late or Get up Early?

单词拼写（共5小题，每小题1分，满分5分）

I would ______ （感激） it if you give me a chance．

Do not regard English learning as a _____ （负担）．

I won't _____ （容忍） your behaving in this way．

It's a good habit to ______ （预习） what will be learned in class．

Helping each other can _____ （促进） our friendship．

If you make       most of the equipment, there will be      rise in production.

       A．不填；不填     B．the; a C．不填; a     D．the;不填

It was after he got what he had wanted           he realized it was not so important.

   A. that           B. when         C. since         D. as

As we all know, many Chinese words have come into English, ______ typhoon, tofu and kung fu.

A. for example           B. that is  

C. such as                   D. so as to