What does the cancellation of the 16-day flight mean?A.The scientists on the ground are pursuing only their most important experiments.B.The shuttle team will be disappointed at the curtailment of the science mission.C.The science will complete the experi

题目

What does the cancellation of the 16-day flight mean?

A.The scientists on the ground are pursuing only their most important experiments.

B.The shuttle team will be disappointed at the curtailment of the science mission.

C.The science will complete the experiments on a later shuttle flight.

D.The remaining generators are sufficient.

参考答案和解析
正确答案:A
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相似问题和答案

第1题:

According to the passage, what will happen if we hold that science is getting beyond control?

A. The development of science will hopelessly slow down.

B. Businesses will have even greater influence on science.

C. The public will lose faith in bringing about a bright future.

D. People will work more actively to put science under control.


正确答案:C

第2题:

SECTION C NEWS BROADCAST

Directions: In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. At the end of each news item, you will be given 10 seconds to answer the questions.

听力原文: The cancellation of the 16-day flight means that the crew and scientists on the ground are pursuing only their most important experiments in the few remaining hours left before the shuttle laboratory is closed. The US sapce agency NASA decided Sunday to bring the orbiter home 12 days early because of fears of weakened power generator could explode. The generator has been turned off, leaving the shuttle with only two thirds of its normal power supply. To conserve electricity for the experiments the crew is working in dimmer lighting than normal and has turned off all unessential equipment. NASA says the two remaining generators are sufficient for Tuesday's landing, but had nevertheless ordered the astronauts to study emergency procedures in case another fails. The shuttle team has expressed its disappointment at the curtailment of the science mission, and says enough data have already been collected in the materials, combustion and biological experiments to push science further ahead. The scientist' goal is to complete the experiments on a later shuttle flight. David Batlery, VOA news, Washington.

Why did NASA decide to bring the shuttle home earlier?

A.The laboratory was closed.

B.The generator was turned off.

C.The power generator might explode.

D.Electricity was going to run out.


正确答案:C

第3题:

What makes a person a scientist? Does he have ways or tools of learning that are different from those of others? The answer is “no”. It is not the tools a scientist uses but how he uses these tools that makes him a scientist. You will probably agree that knowing how to use a power is important to a carpenter. You will probably agree, too, that knowing how to investigate, how to discover information, is important to everyone. The scientist, however, goes one step further, he must be sure that he has a reasonable answer to his questions and that his answer can be confirmed by other persons. He also works to fit the answers he gets to many questions into a large set of ideas about how the world works.

The scientist’s knowledge must be exact. There is no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same must be explained by the changes in the conditions. This is one reason that investigations are important in science. Albert Einstein, who developed the Theory of Relativity, arrived at this theory through mathematics. The accuracy of his mathematics was later tested through investigations, and Einstein’s ideas were shown to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations that may test his investigations.

11.What makes a scientist according to the passage? ________

A.The tools he uses.

B.The way he uses his tools.

C.His ways of learning.

D.The various tools he uses.

12.The underlined part in the passage shows_______.

A.the importance of information

B.the importance of thinking

C.the difference between scientists and ordinary people

D.the difference between carpenters and people with other jobs

13.A sound scientific theory should be one that _________.

A.works not only under one set of conditions at one time, but also under the same conditions at other times

B.does not allow any changes even under different conditions

C.can be used for many purposes

D.leaves no room for improvement

14.The author quotes the case of Albert Einstein to illustrate __________.

A.that measurements are keys to success in science

B.that accuracy of mathematics

C.that investigations are important in science

D.that the mathematical calculations may test his investigations

15.What is the main idea of the passage? ________

A.The theory of relativity.

B.Exactness is the core of science.

C.Scientists are different from ordinary people.

D.Exactness and ways of using tools are the keys to the making of a scientist.


参考答案:BCACD

第4题:

Before signing the delivery note, you should check that the consignment is complete. What does "delivery note" mean in Chinese?

A、交货单

B、便条

C、存款单

D、资信证明


正确答案:A

第5题:

Meeting foreign language requirements for the PhD_________

A. is the most frequent reason for dropping out

B. is more difficult for the science candidate than for the humanities candidate

C. is an essential part of many PhD programs

D. does not vary in difficulty among universities


正确答案:C
通过倒数第三段Nearly 75 per cent of the dropouts said there was no academic reason for their decision.but those who mentioned the academic reason cited failure to pass the qualifying examination,uncompleted research and failure to pass language exams.可知,博士生应达到外语要求的水平是许多博士生课程的一个基本组成部分。C项正确。

第6题:

What is the main idea of the passage?

A. Science and its applications bring us many dangers.

B. The development of science mostly lies in people’s attitudes.

C. Mankind can largely take control of science with their efforts.

D. The future of science will be influenced by the dangerous ideas.


正确答案:B

第7题:

The text is most probably a ________.

A. science news report

B. book review

C. newspaper ad

D. science fiction story


正确答案:A

推理判断题。本文讲述了Kwon的原子能电池的有关情况,文章体裁应属于科普文章,所以A项正确。

第8题:

What can we conclude from the recent study?

A. People think highly of science.

B. People hold mixed opinions about science.

C. Science is getting dangerously out of control.

D. Science is used for both good and bad purposes.


正确答案:B

第9题:

What does the phrase “the wake-up call”in Paragraph 3 most probably mean?

A.a new disease

B.a clear warning

C.a dangerous animal

D.a morning call


正确答案:B

第10题:

What is a logical data mapping and what does it mean to the ETL team?

什么是逻辑数据映射?它对ETL项目组的作用是什么?


正确答案:
答:
逻辑数据映射(Logical Data Map)用来描述源系统的数据定义、目标数据仓库的模型以及将源系统的数据转换到数据仓库中需要做操作和处理方式的说明文档,通常以表格或Excel的格式保存如下的信息:
目标表名:
目标列名:
目标表类型:注明是事实表、维度表或支架维度表。
SCD类型:对于维度表而言。
源数据库名:源数据库的实例名,或者连接字符串。
源表名:
源列名:
转换方法:需要对源数据做的操作,如Sum(amount)等。
逻辑数据映射应该贯穿数据迁移项目的始终,在其中说明了数据迁移中的ETL策略。在进行物理数据映射前进行逻辑数据映射对ETL项目组是重要的,它起着元数据的作用。项目中最好选择能生成逻辑数据映射的数据迁移工具。

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