[单项选择]The scientist will give us a talk ______ the moon.

[单项选择]Is ______ true that the scientist will give us a lecture next week
A. this
B. that
C. it
D. what

[单项选择]The man（）France will give us a talk（）his country.
A. from； on
B. of； in
C. of； about
D. from； of

[单项选择]Unless you give us a satisfactory explanation about quality, we will have no choice but to reject your goods.
A. 除非你方能在质量方面给一个满意的答复，否则我们将不再选择，而是拒绝你方的货物。
B. 除非你方能就质量问题给一个满意的解释，否则我们只能拒绝你方的货物。
C. 只要你们的解释能让我们满意货物的质量，我们就不会拒绝你们的货物。
D. 只要你们的解释不能让我们满意，还存在质量问题，我们将拒绝你们的货物。

[单项选择]The UFO phenomenon is not new to us, but scientists are still not able to offer any______ explanations.
A. specific
B. rational
C. virtual
D. literal

[单项选择]The wall paper will give us a chance to do practise writing articles in English.
A. 墙上贴的纸为我们提供了练习用英语写作的场地。
B. 墙报将给我们提供练习用英语写作的机会。
C. 墙上贴的纸为我们提供了练习写作英语文章的机会。
D. 我们可以在墙上用英语写文章。

[单项选择]Please give us the reason ____ the goods were delayeD)
A. why
B. which
C. what
D. how

[单项选择]______their work will give us a much better feel for the wide differences between the two schools of thought.
A. To have reviewed
B. Having reviewed
C. Reviewing
D. Being reviewed

[单项选择]________ their work will give us a much better feel for the wide differences between the two schools of thought.
A. To have reviewed
B. Having reviewed
C. Reviewing
D. Being reviewed

[单项选择]He must give us more time,________we shall not be able to make a good job of it.
A. consequently
B. otherwise
C. therefore
D. doubtlessly

[单项选择]The scientist could hardly find sufficient grounds （） his arguments in favor of the new theory.
A. to be based on
B. to base on
C. which to base on
D. on which to base

[单项选择]The scientist corresponds with colleagues in order to learn about matters__________ to her own research.
A. reluctant
B. residential
C. resultant
D. relevant

[单项选择]A scientist interested in general knowledge about oxygen would probably call his approach ______.
A. applied science
B. chemical science
C. pure science
D. environmental science

[单项选择]

A scientist who does research in economic psychology and who wants to predict the way in which consumers will spend their money must study consumer behavior. He must obtain data both on the resources of consumers and on the motives that tend to encourage or discourage money spending. If an economist were asked which of the three groups borrow most -- people with rising incomes, stable incomes, or declining incomes -- he would probably answer: those with declining incomes. Actually, in the years 1947 to 1950,the answer was: people with rising incomes. People with declining incomes were next and people with stable incomes borrowed the least. This shows us that traditional assumption is that if people who have money expect prices to go up, they will hasten to buy. if they expect prices to go down, they will postpone buying. But research surveys have shown that this is not always true. The expectations of price increases may not stimulate buying. One typical attitude was expressed by
A. Consumer's Purchasing Power
B. Relationship between Income and Purchasing Power
C. Traditional Consuming Views
D. Studies in Consumer Behavior

[单项选择]A scientist working for a pharmaceutical company tries many models using the same data before reporting the one that shows that the given drug has no serious side effects. The scientist is guilty of:（）
A. look -ahead bias.
B. time -period bias.
C. data mining.