无论代表大会，领导班子，还是咨询机构，在决策理论中都称为群（group），群所作的决

长江公司与天龙建筑公司签订了由天龙公司承建长江公司办公楼的合同，下列表述错误的是：

A．天龙公司可以将主体工程分包给其他建筑队，但对工程质量应由天龙公司对长江公司承担全部责任

B．如果长江公司无故解除合同，则构成违约，应当承担对天龙公司造成的损害

C．工程竣工经验收合格后，长江公司未按照约定支付价款，经天龙公司催告在合理期限内仍不支付、天龙公司有权申请人民法院将该办公楼依法拍卖，并就拍卖所得价款优先受偿

D．如果有关勘察单位违约未按期提供勘察文件造成工期延误，长江公司应当对天龙公司的停工、窝工损失承担赔偿责任

把下列每组算式组成综合算式．

（1）33.5÷5=6.7

6.7×3=20.1

10+20.1=30.1

综合算式：______

（2）4×3=12

68.4÷12=5.7

13+5.7=18.7

综合算式：______

（3）3.6×3=10.8

10.8-10.5=0.3

60÷0.3=200

综合算式：______

（4）0.37×8=2.96

2.96+0.74=3.7

3.7÷0.37=10

综合算式：______．

C

Americans use more water than any other people in the world. If we continue to use water at the rate we do now, we will soon not have enough to meet our needs. In 1980, 40 billion gallons were used each day in the United States. In 1990, 700 billion gallons were used. The average Americans use almost 90 gallons of water a day for personal use. And much move water is needed to make the things American people like to have. For example, it takes thousands of gallons of water to make one pound of beef for the dinner table. It takes more than 100000 gallons of water to make a car. If we include these uses of water, the average American uses about 2000 gallons of water a day．

It takes ______ water to make a car than to make one pound beef.

A．much

B．more

C．less

D．fewer

美国内战前，北方和南方之间的矛盾聚焦于

A．领土扩张问题

B．国外市场问题

C．奴隶制存废问题

D．殖民地归属问题

Some oil companies plan to get rid of some of the pollution they produce by pumping it into rocks deep inside the Earth, where they say it will stay for thousands of years. Other people ,though, aren’t so sure this is advisable; environmental groups say that putting this pollution back into the Earth is a bad idea.

When oil burns, it doesn’ t just produce heat: it also produces carbon dioxide. Carbon dioxide is a natural part of the air, but because people burn so much oil, there’ s too much carbon dioxide in the air. This extra carbon dioxide is pollution; some scientific studies show that carbon dioxide is one of the" greenhouse gases" that is causing the Earth’ s temperature to rise.

Environmentalists say that the oil companies’ plans may not work. The oil companies say they are making sure that the gas will never escape, but environmentalists wonder how the oil companies can be so sure that the gas won’ t seep into the air. They also point out that there’ s no way to check to make sure the gas isn’ t leaking. In addition, the environmentalists point out that the pumping costs money--for research and for equipment--that the oil companies should be spending on preventing pollution, rather than on just moving it someplace else.

Another problem, say some people who are concerned about the Earth, is that if the oil companies find a cheap way to get rid of their pollution, they won’ t look for new kinds of energy. These environmentalists say that energy companies should be researching ways to use hydrogen, wind power, and solar power instead of finding better ways to use oil. They argue that continuing to use oil means that we will still need to buy oil from other countries instead of producing our own cheap, clean energy.

Environmentalists also say that burying pollution just pushes the problem into the future, rather than really solving it. They say that if the oil companies pump carbon dioxide into the rocks inside the Earth, it will be there for thousands of years, and that no one knows if this plan--even if it works--might turn into a pollution problem for all of us in the future.

The oil companies insist that their plan is safe, and that putting the gas inside the Earth is a reasonable way to deal with it. They point out that there is a lot of room in the Earth for this extra gas, and that putting carbon dioxide inside the Earth means that the gas won’t be in the air, and if it’ s not in the air, it won’ t make the Earth warmer.

Which of the following is NOT mentioned as a disadvantage of burying pollution（）

A. It actually prevents companies from looking for other energy sources

B. It is difficult to make sure that the buried gas will stay where they are

C. It might turn up with serious consequences in the years to come

D. It will possibly take up too much room in the earth to be sustainable