如果拱坝封拱时混凝土温度过高，则以后温降时拱轴线收缩对坝体应力不利。（）

阅读短文，选择正确答案。

                                                           Died of shock (震惊)

    A very old lady won a million dollars in a lottery（ * * ）. Her son and her husband heard the news on the

radio. 

    "How are we going to tell your mother?" the man asked. "The news might kill her." 

    "That's true." said the son. "Perhaps we'd better speak to her doctor about it. He will know how to bring the

news to her gently."

    They told the old lady's doctor about this . 

    "I'm glad you told me," he said, "A shock even a happy one could give her heart attack (打击). Leave it to

me. I'll find a way of bringing the news to her." 

    The doctor thought about the problem for several days. Then decided what he would say.

    He called on the old lady and sat by her. He took her hand in his. "let's play a game ,my dear," "A Let's

Pretend Game (一个假装游戏)." 

    "Oh, yes," said the old lady. "I love playing it." "Good , I'll ask you a question first" the doctor said. "Then

you can ask me one." 

    He pretended to think for a few moments. Then he said, "Tell me , what would you do if you won a million

dollars in the lottery?" 

    "Oh. That's an easy one," the old lady said. "I'd give most of it to you, Doctor. Because you have been so

good to me all these years. Doctor!" 

    But the doctor was lying on the floor. He had died of sock.

1. Why didn't the son and his father tell the lady the good news at once? Because they _______. [ ]

A. weren't sure it was right

B. didn't want her to die of sock

C. want to kill her first

2. The doctor was also worried that the news would ________. [ ]

A. make her worried

B. kill him

C. cause a heart attack

3. The doctor went to the old lady's house ________. [ ]

A. to give her a heart attack

B. to play games with her

C. to tell her the news

4. Why was the doctor lying on the floor? Because ________. [ ]

A. he hoped the old lady would do the same.

B. It was part of the "Let's Pretend" game.

C. he had died of shock

5. Which of the following is wrong? [ ]

A. The son took bad care of the old lady's health

B. They wanted to tell her the happy news, but they didn't want to shock her.

C. The doctor tried to tell the news gently.

已知下列数列{a_n}的前n项和S_n，分别求它们的通项公式a_n，

(1)S_n=2n²+3n；

(2)S_n=3ⁿ+1。

一位美国历史学家在谈到一战前的欧洲形势时说：欧洲变成了一只“火药桶”，只

等一粒火星将它引爆。“引爆”“火药桶”的“火星”是指（ ）

A．《三国同盟条约》的签订

B．《法俄军事协定草案》的签署

C．《英俄协约》的签订

D．萨拉热窝事件

People have always been dreaming of going to the moon. As long as the year 1901, H. G. Wells, an English writer, wrote a book vividly describing a trip to the moon. On landing there, the explorers discovered that the moon was full of underground cities. Words failed to express their surprise when they spotted so many “moon people”. The “moon people” felt even more surprised. “Why,” they asked, “are you traveling to outer space when you don’t even use your inner space?”

H. G. Wells could only imagine a travel to the moon. In 1969, human beings really left their footsteps on the moon. People today know that there are no underground cities on the moon. However, the question that the “moon people” asked is still an interesting one. A growing number of scientists are seriously thinking about it.

Underground systems are already in place. Many cities have underground car parks. In some cities, such as Tokyo, Seoul and Montreal, there are large underground shopping areas. The “Channel”, a tunnel connecting England and France, is now complete.

But what about underground cities? Japan’s Taisei Corporation is designing a network of underground systems, called “Alice Cities”. The designers imagine using surface space for public parks and using underground space for flats, offices, shopping, and so on. A solar dome (太阳能穹顶) would cover the whole city.

Supporters of underground development argue that building down rather than building up is a good way to use the earth’s space. The space, they say, can be used for farms, parks, gardens, and wilderness. H. G. Wells’ “moon people” would second it. Would you?

小题1:The explorers in H. G. Well’s story were surprised to find that the “moon people”     .

A．knew so much about the earth

B．understood their language

C．lived in underground cities

D．were advanced in technology小题2:What does the underlined word “it” (paragraph 2) refer to?

A．Discovering the moon’s inner space

B．Using the earth’s inner space

C．Meeting the “moon people” again

D．Traveling to outer space小题3:What sort of underground systems are already in place?

A．Offices, shopping areas, power stations.

B．Tunnels, car parks, shopping areas.

C．Gardens, car parks, power stations.

D．Tunnels, gardens, offices.小题4: We can learn from the text that     .

A．H. G. Wells once went to moon himself.

B．Underground cities are more comfortable.

C．The solar dome is a necessary part of underground cities.

D．More underground systems will be in place in 2013.小题5:What would be the best title of the text?

A．Alice Cities — cities of the future

B．Space travel with H. G. Wells

C．Enjoy living underground

D．Building down, not up

“损人式”说谎包括（）。

A.打击报复

B.反抗叛逆

C.捉弄戏谑

D.无事生非