单项选择题From the evolutionary point of view, ______.

A.forgetting for lack of practice tends to be obviously inadaptive
B.if a person gets very forgetful all of a sudden he must be very adaptive
C.the gradual process of forgetting is an indication of an individual's adaptability
D.sudden forgetting may bring about adaptive consequences


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1.单项选择题The tone of the passage can best be described as ______.

A.hypothetical
B.humorous
C.exaggerative
D.philosophical

2.单项选择题It is generally thought that a theorist in science is an individual who ______.

A.has strong feelings
B.has the ego of actors
C.is both cold and rational
D.is neither neurotic nor psychotic

3.单项选择题In the author's opinion, ______.

A.theorists never need society
B.a scientist should not try to adapt himself to the world
C.a non-theorist never tries to adapt the world to himself
D.theorists should contribute to the progress of human society

4.单项选择题In Line 4. Paragraph 3, the word "exacerbated" is most similar in meaning to" ______".

A.caused
B.encouraged
C.forced to continue
D.aggravated

5.单项选择题What can be inferred from the passage

A.Theorists tend to look cool and irrational because of their disdain for the public speculation.
B.People consider theorists separately because they are the rare and fascinating species scientifically.
C.As a matter a fact, theorists are full of strong feelings and obsessed with their research.
D.It is suggested that we tolerate theorists not out of our sense of humanity but for our selfish interests.

6.单项选择题It is implied in the passage that a theorist pursues science ______.

A.chiefly for changing the world
B.just for challenging the status quo
C.primarily for the benefits of humankind
D.mainly for playing the game of science

7.单项选择题According to this passage, non-theorists in science ______.

A.are usually absent-minded or unrealistic
B.have an irrational attachment to his research
C.do their research within tile framework set by theorists
D.are rarely interested in filling in details of existing theories

8.单项选择题According to the passage, if a person never forgot, ______.

A.he would survive best
B.he would have a lot of trouble
C.his ability to learn would be enhanced
D.the evolution of memory would stop