1 . When water is cold, people will find it uncomfortable to swim. Wetsuits(潜水服）can help keep people warm.    1    So wetsuits are important. In many water sports, you can find people wearing them.

The wetsuit doesn't have a long history. According to studies, the wetsuit only began during WWII when Italians started wearing wetsuits that were made of rubber. And it was widely believed in 1951, Hugh Bradner began working to improve the equipment.     2    

Now there are many kinds of wetsuits. Contrary to what some may think, wetsuits do not work by keeping the diver(潜水员）dry; they are designed to let water into the suit. This thin layer of water is trapped（保存）between the diver and the suit. And it's allowed to move between the skin of the diver and the inside layer.     3    And it can help keep the diver comfortable during the diving process. That's why it's important to have a nice, tight fit for a wetsuit.

    4    The shorter wetsuit often provides cover for the main part of people's bodies. This kind of wetsuit works well with boating, water skiing, swimming, etc. A longer wetsuit can completely cover the body, including long legs.With more protection for the body, it may be used in cool weather conditions.

Wetsuits can also differ in thickness. They range from about 0. 5mm to 8mm in thickness. It's true that thicker wetsuits are more likely to affect your movement.     5    Generally, the colder the water you plan to dive in, the thicker the wetsuit should be.

A．But they're much better at giving you warmth.

B．As for the difference, wetsuits can differ in size.

C．The history of the wetsuit is an interesting story.

D．This led to the development of a kind of new wetsuit.

E．Many wetsuits are very light and easy to wear and take off.

F．As a result, the water gradually warms up to body temperature.

G．And they can provide protection from the sun and cuts from rocks.

2 . Scientists have discovered how cancer cells use an ‘‘invisibility cloak’’ to hide from the immune system．

They hope understanding the mechanism(机制,原理) will lead to therapies(疗法)in five to ten years that force cancer cells into the firing line of the body’s defenses.

Such a breakthrough would revolutionize the treatment of many deadly cancers, especially those of the breast and lung.

Researchers in Canada found that spreading tumors（肿瘤,肿块）can evade(躲避)the immune system by remodeling（改变…的结构）their DNA “packaging”.

The genetic code within each cell is held within “chromatin(染色质)”, a coiled（圈状的） structure made from lines of DNA wrapped around proteins．Because of chromatin, more than a meter of DNA can be squeezed inside a cell nucleus.

Recently scientists have learned that the chromatin proteins, called histones(组蛋白), have a code of their own which can influence the control of genes.

Professor Wilfred Jefferies and his colleagues found that some cancer cells have the ability to change this “histone code”.

By doing so，they remove the molecular（分子的）“tags” on cells that the immune system relies on to recognize cancer.

Without these tags, cancer cells are invisible to the immune system and can multiply and spread freely.

“This discovery begins to address the mysteries of how cancer hides from the immune system and spreads--it helps explain 20 years of observation in the field,” he said, “It may offer whole new ways for therapies.”

“The invisibility mechanism operates across a range of malignancies(恶性肿瘤) including cancers. But it is particularly active in breast and lung cancers,” the professor said．

He believes within five to 10 years the findings may lead to new therapies that force cancer cells to ‘‘drop the cloak of invisibility’’ and make themselves immune system targets．

1. What’s the significance of the new discovery of cancer cells’ mechanism?

A．It may help deeply understand how cancer cells develop．

B．It may make various cancers completely curable．

C．It may result in many new ways to the treatment of cancers．

D．It may help people improve body’s immune system．

2. From the passage we know that at present time________．

A．the immune system cannot wipe out the cancer cells effectively

B．the immune system cannot recognize the cancer cells rightly

C．the immune system is weak in defending against the cancer cells

D．the cancer cells can pretend to be other normal cells

3. How does the immune system tell the cancer cells from the other normal cells?

A．By a coiled structure of DNA．

B．By remodeling their DNA packaging．

C．By the molecular tags on cells．

D．By an invisibility cloak．

4. What do you think is the first step to fight against cancer cells?

A．To remove the ability of cancer cells changing histone code．

B．To improve the functions of people’s immune system．

C．To develop new immune system able to recognize cancer cells．

D．To help people understand the dangers of various cancer cells．

5. From the passage we can infer that________．

A．the incidence of breast and lung cancers may be the highest

B．this finding can completely change the traditional therapies of cancers

C．the new treatment of cancers will be developed soon

D．cancer cells may be the smartest cells in the world

3 . A few years ago when my youngest son Matt was about 8 or 9 years old, we were getting things together to take them to the Salvation Army at Christmas time. The boys would _________their old toys and give away what they didn’t “ _________ ”. I always make cookies and get together blankets and clothes. Matt and l were_________the Christmas “package” to our local Salvation Army. We unloaded everything and _________home.

When we took the corner out of the_________lot, Matt noticed that a baseball glove he had put in the bag had_________. He said, “Morn, we forgot my glove.” Just then he_________a little boy and his Mom sitting on a bench on the side of the _________ where the small playground is. He said, “Mom, can we pull over and I can _________ it to him?” I said “Sure.” and we pulled over and went through the gate．

Matt __________ the boy the glove and said, “Here, Santa__________ me to give this to you.” He was so __________ to get it! His Mom __________and gave Matt a HUGE hug. Her eyes were full of __________. She looked at us and said “This was the best __________he could get, all I could get him this year was a baseball.”

When we __________ into the van, Matt said to me “Mum, God must have __________ me forget the baseball glove inside, so that little boy could have it—it was__________ to be!” That moment made me believe again my __________ in my belief that everything happens for a __________ and I have tried my best to get people to see that ever since !

1.

A．buy

B．find over

C．go through

D．take over

2.

A．have

B．use

C．like

D．need

3.

A．delivering

B．sending

C．giving

D．selling

4.

A．left

B．headed

C．stayed

D．got

5.

A．parking

B．staying

C．building

D．meeting

6.

A．run out

B．given out

C．fallen out

D．fallen over

7.

A．asked

B．spotted

C．told

D．heard

8.

A．road

B．park

C．church

D．building

9.

A．send

B．hand

C．give

D．pass

10.

A．handed

B．left

C．sold

D．bought

11.

A．asked

B．wanted

C．told

D．needed

12.

A．happy

B．doubtful

C．frightened

D．sad

13.

A．came over

B．sat down

C．stood up

D．went away

14.

A．happiness

B．tears

C．fears

D．worries

15.

A．tool

B．toy

C．clothing

D．gift

16.

A．left off

B．ran away

C．sat down

D．got back

17.

A．seen

B．made

C．heard

D．watched

18.

A．tried

B．made

C．meant

D．used

19.

A．faith

B．thought

C．idea

D．words

20.

A．moment

B．time

C．purpose

D．reason

4 . 阅读下面的短文，并根据短文后的要求答题。（请注意问题后的字数要求）

Have you considered studying abroad, but are not sure whether it’s worth our time? Perhaps you’re not certain what benefits you can get from an extended stay in a foreign country. Here are some very excellent reasons why you should study in a foreign county?

1. Studying abroad is the best way ________. There is no better and more effective way to learn a language than to study in a culture that speaks the language you’re learning. You’re surrounded by the language on a daily basis are seeing and hearing it in the proper cultural context. Language learning happens most quickly under these circumstances.

2. Studying abroad provides the opportunity to travel. Weekends and academic breaks allow you to venture out and explore your surroundings — both your immediate and more distant surroundings. Since studying abroad often puts you in a completely different country, you are much closer to places you might otherwise not have had the opportunity to visit.

3. Studying abroad allows you to get to know another culture at first hand. Cultural differences are more than just habits. A person’s culture reflects very deep thoughts, beliefs, and values that influence his or her way of life and that he or she views the world. Students who experience cultural differences personally can truly understand where other cultures are coming from.

4. Studying abroad affords you the opportunity to make friends around the world. While abroad, you will meet not only natives to the culture in which you are studying, but also other international students who are as far from home as you.

5. Studying abroad raises employment opportunities. As the world continues to become more globalized, American countries are increasingly investing dollars abroad, and companies from countries around the world continue invest in the international market. Through an employer’s eyes, a student who has studied abroad is independent. Your experience living and studying in a foreign country, knowing about other culture and another language will make you have many advantages over the other job applicants(求职者).

1. Fill in the blank with proper words. (no more than 8 words)
________________
2. What is the best title of the passage? (no more than 10 words)
________________
3. Which sentence in the passage is the closest in meaning to the following one?
According to an employer, studying abroad makes a student more independent.
________________
4. Which benefit do you think is most attractive to you? Why? (no more than 30 words)
________________
5. Translate the underlined sentence into Chinese.
________________

5 . A lot of countries have gained great achievements in space technology, ________ China and India.

A．for example	B．that is
C．such as	D．in other words

6 . The naughty boy is a bit hard to deal with，which ________the trouble adapting to the new environment.

A．makes for	B．adds to
C．focuses on	D．devotes to

7 . Though my brother has been out of ________ work for more than half a year, he never loses ________ heart.

A．/; /

B．/; the

C．the; /

D．the; the

8 . 阅读下面的短文，请根据短文后的要求答题（注意问题后的字数要求）

[1] When the space shuttle Endeavor took off from Kennedy Space Center on September 12, 1992, people cheered. It’s always exciting when a space shuttle launches.

[2] But this launch was very special because one of the astronauts on board was Dr. Mae C. Jemison, the first African American woman ever to fly in outer space. Speaking from space on live television, Dr. Jemison said with excitement: “I’m closer to the stars---somewhere I’ve always dreamed to be.”

[3] Dr. Jemison was interested in space from a young age. She did very well in science and math classes at school. After graduating from college she decided to go to medical school. She worked as a doctor in the United State, and also spent several years as a doctor in Africa.

[4] But she was still interested in space, and so she applied to NASA(美国宇航局)to become an astronaut. The first time she applied, she failed, but ________. Dr. Jemison applied again. This time she was accepted---along with only 14 others out over 2000 people who applied!

[5] When Dr. Jemison left NASA she started a company. She is very interested in improving health care in Africa. Dr. Jemison spends part of her time teaching; she also gives many speeches to young people. She wants young people to find out for themselves what she found in her life: there is no limit to where your dreams can take you.

1. What was special about Dr. Jemison according to Paragraph2? (no more than 15 words)
________________
2. What the meaning of “ what” in the last paragraph?
________________
3. Fill in the blank in Paragraph4 with proper words. (no more than 6 words)
________________
4. What’s the main idea of Paragraph4?
________________
5. Why does Dr. Jemison give speeches to young people? (no more than 15 words)
________________

9 . The 1930s, when he was in his twenties, ________ the sufferings that the Chinese were bearing from the war.

A．observed

B．witnessed

C．proved

D．supplied

10 . I’m sorry to say your performance didn’t get to the requirements, ________ you cannot be accepted by our company.

A．in a word

B．on the other hand

C．in general

D．in other words