下列SE序列的扫描参数，符合质子加权成像的是（）A、TR2500ms，TE100ms

完形填空（每题1分，共10分）

Elena Desserich was a little girl. She loved to ___1___ and write. Elena dreamed of becoming an artist when she grew up—but sadly, she ___2___ had the chance to be an adult. When elena was 5 years old, the ___3___ said that she had brain cancer(癌症) and only had 135 days to ___4___.

Elena ___5___ the long days in hospital working on her painting, which were full of hearts and smiling families. ___6___ of her painting was shown in a gallery(画廊), right next to a Picasso’s painting. Soon she lost the use of her ___7___, and she began to “talk” with her family by writing notes.

When Elena died, her parents were very sad, ___8___ they knew the day would come. When they were tidying up her things, they began to find notes. All through her final days, Elena was writing love notes to her family and hiding(藏) ___9___ in secret places in the house.

Her parents started to collect them and all the ___10___ would say “I love you Mum, Dad and Grace.” They kept finding them—the amazing gift from Elena.

1. A. sing          B. play           C. paint                 D. read

2. A. never         B. sometimes       C. always               D. usually

3. A. father         B. teacher               C. mother                D. doctor

4. A. die            B. live                  C. work                  D. paint

5. A. took           B. paid                  C. spent                 D. cost

6. A. All             B. One                  C. Both                 D. Neither

7. A. voice          B. eyes                 C. ears                  D. nose

8. A. ever since     B. even                 C. even though            D. however

9. A. it            B. her                  C. that                   D. them

10. A. notes         B. paintings             C. books                 D. places

阅读理解。

                                               Waste to Energy-JUST BURN IT!

     WHY BURN WASTE?

     Waste-to-energy plants generate (产生) enough electricity to supply 2.4 million households in the US. But,

provrding electricity is not the major advantage of waste-to-energy plants. In fact, it costs more to generate

electrlcity at a waste-to-energy plant than it does at a coal, nuclear, or hydropower plant.

     The maior advantage of burning waste is that it considerably reduces the amount of trash going to landfills.

The average American produces more than l,600 pounds of waste a year. If all this waste were landfilled, it

would take more than two cubic yards of landfill space. That's the volume of a box three feet long, three feet

wide, and six feet high. If that waste were burned, the ashes would fit into a box three feet long, three feet

wide, but only nine inches high!

     Some communities in the Northeast may be running out of land for new landfills. And, since most people

don't want landfills in their backyards, it has become more difficult to obtain permits to build new landfms.

Taking the country as a whole, the United States has plenty of open space, of course, but it is expensive to

transport garbage a long distance to put it mto a landfill.

TO BURN OR NOT TO BURN?

     Some people are concerned that burning garbage may harm the environment. Like coal plants, waste-to-

energy plants produce air pollution when the fuel is bumed to produce steam or electricity. Burning garbage

releases the chemicals and substances found in the waste. Some chemicals can be a threat to people, the

environment, or both, if they are not properly controlled.

     Some critics of waste-to-energy plants are afraid that burning waste will hamper (妨碍, 阻碍) recycling

programs. If everyone sends their trash to a waste-to-energy plant, they say, there will be little motive to

recycle. Several states have considered or are cons idering banning waste-to-energy plants unless recycling

programs are in place. Massachusetts, New Jersey, and New York City have delayed new waste-to-energy

plants, hoping to increase the level of recycling first.

     So, what's the real story? Can recycling and burning waste coexist? At first glance, recycling and waste-

to-energy seem to be at odds (不一致), but they can actually complement (弥补) each other. That's because

it makes good sense to recycle some materials, and better sense to burn others.

     Let's look at aluminum, for example. Aluminum mineral is so expensive to mine that recycling aluminum

more than pays for itself. Burning it produces no energy. So clearly, aluminum is valuable to recycle and not

useful to burn.

     Paper, on the other hand, can either be burned or recycled-it all depends on the price the used paper will

bring. Plastics are another matter. Because plastics are made from petroleum and natural gas, they are excellent

sources of energy for waste-to-energy plants. This is especially true since plastics are not as easy to recycle

as steel, aluminum, or paper.

     Plastics almost always have to be hand sorted and making a product from recycled plastics may cost more

than making it from new materials.

     To burn or not to burn is not really the question. We should use both recycling and waste-to-energy as

alternatives to landfilling.

                                               Waste to Energy-JUST BURN IT!

中国历史上出现了许多农民 * * ，其中“大顺” * * 是谁建立的（）

A、李自成

B、张献忠

C、高迎祥

D、陈胜

北京犬，8岁，雄性。腹股沟肿物，下降至阴囊，手触压肿物后消失，可能是（）

A．腹股沟疝 

B．脐疝 

C．腹壁疝 

D．睾丸鞘膜积液 

E．隐睾

在营销应用系统中，客户的计费方案不包括（）

A.用电性质

B.执行的电价

C.功率因数

D.行业类别