A. used B. need C. ought D. dear

If you need a transfusion, the best and safest blood for you is______.

A. type AB

B. exactly the same type as yours

C. a mixture of salt, plasma and type O

D. type A

A. it's full

B. Good question

C. I bet that was fun

D. Good idea

E. I used to

F. fewer cars

G. Look

H. Hey

A: Why is there never a bus when you want one？

B: (56) . There aren't enough buses on this route.

A: Sometimes I feel like writing a letter to the paper.

B: (57) . You should say that we need more subway lines, too.

A. Yeah. There should be more public transportation in general.

B: And (58) ! There's too much traffic.

A: (59) , is that our bus coming？

B: Yes, it is. But look, (60)

A: Oh, no! Let's go and get a cup of coffee. We can talk about this letter I'm going to write.

(课外选材)

When computer servers operate a complex program, they can get very hot. Cooling the servers can be costly. So researchers asked what would happen if the heat created by the servers could be captured and used？

Data centers of large Internet companies such as Google and Microsoft have thousands of computer servers. As these servers process information, they create large amounts of heat, so they need huge cooling systems. These systems send the heat into the air. The Dutch company Nerdalize thinks paying for electricity to operate the servers and then paying again to cool them is a waste of energy. So it developed a device called the e-Radiator. It is a computer server that also works as a heating source. Boaz Leupe is the chief executive officer of Nerdalize. He says the e-Radiator saves money because companies don't have to pay to cool their servers.

"The kilowatt(千瓦)hour you are using is used twice -- once to heat the home and once to compute the client's task without the cooling overhead." He says five homeowners in the Netherlands are testing the heating device in their homes. "We reimburse the electricity the server uses, and that we can do because of the computer clients on the other side, and, in that way, homeowners actually get heating for free, and computer users don't have to pay for the overhead of the data center.

Jan Visser is one of the participants in the year-long experiment. He says the amount of heat produced by the e-Radiator depends on the work being done by the computer server. He says it cannot be used as the primary source of heat. But he is ready to try it.

He says if it provides enough warmth, he will be able to use his home's heating system less, which will save him money. Nerdalize says e-Radiators create heat temperatures of up to 55℃. It says the devices could save users up to $440 in heating costs a year.

1.Why did researchers ask what would happen if the heat created by the servers could be captured and used？{A; B; C}

A. Because computers can get very hot.

B. Computer servers is a complex program.

C. Cooling computer servers costs a lot of money.

2.The computer servers in large Internet companies such as Google and Microsoft can {A; B; C}.

A. create large amounts of information

B. create large quantity of heat

C. manage the huge cooling systems

3. Nerdalize developed the e-Radiator because {A; B; C}.

A. e-Radiator cost less energy

B. e-Radiator can cool the servers for free

C. e-Radiator can create cold air for free

4.According to Jan Visser, the amount of heat produced by the e-Radiator {A; B; C}.

A. depends on the work being processed by PC

B. cannot be used as the home's heating system

C. cannot be used as the main source of heat

5.The best title for this passage is {A; B; C}

A. The New Way to Heat Homes

B. The New Way to Cool Homes

C. Hot Computers Could Be Used for Free

Eggs are my favorite food. I like them (21) , hard-boiled, scrambled, or poached. 1 eat eggs for (22) , lunch, and dinner. I eat eggs here, there, and everywhere!

Eggs taste great. You can eat them by (23) or as part of any meal. Eggs are (24) used as an ingredient in many prepared foods. Can you think of any foods that contain (25) ？

Eggs are really a perfect food. They are (26) in most of the nutrients we need to maintain good (27) . When a baby chicken develops (28) an egg, the egg (29) and yolk are the only foods they need.

Many people believe that eggs are (30) . They point out that eggs contain a very high amount of

cholesterol(胆固醇). Too (31) of one kind of cholesterol in our blood can cause he-art disease.

There is no evidence that eggs (32) the harmful cholesterol in our blood. When we eat foods that are

(33) in cholesterol, our bodies make (34) of it to balance, or adjust.

If you want to enjoy a tasty and healthy food, eat plenty of (35) .

21.

A. fried

B. cooked

C. eaten

D. decorated

Some warm-blooded animals ______ hibernate.

A. need not

B. does not need

C. not need

D. do not need

"Desperate" means ______.

A. in great need

B. reckless

C. hopeless

D. skillful

A． that

B． where

C． how

D． which

In this passage, "learned" is used ______.

A. as a word equal to "educated"

B. as a word similar to "informed"

C. as a word close to "acquired"

D. as a word opposite to "popular"

As used in the last sentence, the phrase "in short" means ______.

A. in the long run

B. in detail

C. in fact

D. in a word

Silk()by Chinese for thousands of years now.

A. has used

B. has been used

C. was used

D. is used