2012年4月22日是第43个世界地球日,中国国土资源报社联合腾讯网发起“世界地

题型:选择题

问题:

2012年4月22日是第43个世界地球日,中国国土资源报社联合腾讯网发起“世界地球日”微话题,共有18 891 511人次参与了这次活动,将18 891 511用科学记数法表示(保留三个有效数字)约为(  )

A.18.9×106

B.0.189×108

C.1.89×107

D.18.8×106

考点:科学记数法和有效数字
题型:选择题

涩味药物与下列何种药物作用相似()

A.苦味

B.咸味

C.酸味

D.辛味

E.甘味

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13、(18分)阅读材料,回答问题。

(4)综上,你认为影响社会生活风尚的因素有哪些?(3分)

题型:选择题

________ by the problem that was put forward at the meeting, the people in the audience had

________ looks on their faces.   [      ]

A. Puzzled;puzzling

B. Puzzled;puzzled

C. Puzzling;puzzling

D. Puzzling;puzzled

题型:选择题

When I was at university, I studied very hard. But a lot of my friends did very little work. Some did just enough to pass exams. Others didn't do quite enough. Fred Baines was one of them. He spent more time drinking in the Students' Union than working in the library.

Once, at the end of the term, we had to take an important test in chemistry. The test had a hundred questions. Beside each question, we had to write "True" or "False". While I was studying in my room the night before the test, Fred was watching television. Fred usually worried a lot the night before a test. But on that night he looked perfectly calm. Then he told me of his plan.

"It's very simple. There are a hundred questions and I have to get fifty correct to pass the test. I'll take a coin into the examination room. I haven't studied a chemistry book for months, so I'll just toss(抛) the coin. That way, I'm sure I'll get half the questions right."

The next day Fred came cheerfully into the examination room. He sat tossing a coin for half an hour as he marked down his answers. Then he left, half an hour before the rest of us.

The next day, he saw the chemistry professor in the corridor (走廊).

"Oh, good," he said. "Have you got the result of the test? What mark did I get?"

The professor looked at him and smiled.

"Ah, it's you, Baines. Just a minute."

Then he reached into his pocket and took out a coin. He threw it into the air, caught it in his hand and looked at it.

"I'm terribly sorry, Baines," he said, "you failed."

61. Fred Baines          .

A. spent quite some time working in the Students' Union

B. worked hard at his lessons but he failed again and again

C. often failed his tests

D. wouldn't work hard so long as he could pass a test

62. Fred looked perfectly calm before the chemistry test because        .

A. he was already well prepared for it

B. he didn't think the test was so important for him

C. someone had promised to help him out

D. he believed he had found out a way to pass the test without any difficulty

63. The students were required to finish the test within       .

A. half an hour   B. an hour   C. three quarters   D. an hour and a half

64. After the test, Baines was       .

A. sure that he would pass it            

B. anxious to know the result

C. sorry that he cheated during the test  

D. discouraged because he'd probably fail the test

65. The professor told Baines the result of the test by tossing a coin because     .

A. he hadn't marked all the papers yet  

B. he couldn't remember the mark Baines got

C. he wouldn't hurt Baines' feeling by telling him the truth

D. he wanted to teach Baines a lesson

题型:选择题

1980年3月24日,中 * * 召开广东、福建两省会议,正式将深圳等“出口特区”定名为“()”。

A.开放特区

B.发展特区

C.经济特区

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