题目
The term biological clock is applied to the means, which living things 【M1】______
adjust their activity patterns, without any obvious cue, the time of day, or 【M2】______
the month, or the year. They are affected but little, if at all, by drugs,
chemical, or wide temperature differences—factors may alter substantially 【M3】______
the rates of all ordinary processes of the body.
The nature of the biological clocks mechanism is still a mystery. Two 【M4】______
quite different theories have been advanced to account to them. According 【M5】______
to the first of these theories, each individual have evolved, aided by natural
selection, an adaptation to the rhythmic environment. It has now 【M6】______
become independence on the environment. According to this view, the clocks 【M7】______
are not perfect timers. They require regular corrections by the natural light
and tide cycles and the changed lengths of the day throughout the year. 【M8】______
The other theory holds up living things react continuously to their 【M9】______
rhythmic physical environment. The setting of their biological clocks,
therefore, involves a constant adjustment to subtle clocks are potential 【M10】______
perfect timers.
【M1】
第1题
Why does the professor discuss the "biological clock"?
A.To review a term before the next test
B.To compare different types of clocks
C.To amuse students with a personal story
D.To respond to a student's question
第2题
Biological clock tells time.
A.Right
B.Wrong
C.Not mentioned
第3题
We can conclude from the first paragraph that
A.every creature has an inner biological clock.
B.the biological clock works day and night.
C.the biological clock has circadian rhythms.
D.the biological clock regulates behavior. of creatures.
第4题
A.which a term applied
B.a term applied
C.is a term applied
D.applied a term
第5题
Scientists doubt whether it's______to regulate one's biological clock by drinking.
A.feasible
B.incredible
C.fashionable
D.valuable
第6题
Scientists doubt whether it's______to regulate one's biological clock by drinking.
A.feasible
B.incredible
C.fashionable
D.valuable
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