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【单选题】
It's really been an unforgettable experience.Let's stay in touch.A.
say and touch
B.
say in touch
C.
stay in touch
D.
stay and touch
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举一反三
【单选题】The studies in Para. 2 ______.
A.
are biased, lacking theoretical ground
B.
show one' s genetic link to shyness
C.
range from kids of 2 years old to those of 7 years old
D.
show the unpredictability of shyness during one's growth
【单选题】Talk to anyone in the drug industry, ______you'll soon discover that the science of genetics is the biggest thing to hit drug research since penicillin was discovered.
A.
or
B.
and
C.
for
D.
so
【单选题】根据下面短文内容，回答题。 The Tough Grass that Sweetens Our Lives 第46题___________ 查看材料
A.
Eventually， a commercial plant was developed which was 5 percent sweeter than before，but also much stronger and less likely to die from disease.
B.
One major gene has been identified by Dr Angelique D'Hont and her team in Montpelier，France.
C.
Sugar cane is now much more vigorous and the supply of sugar is therefore more guaranteed.
D.
Since the 1960s， scientists have been analyzing the mysteries of the sugar cane's genetic code.
E.
The majority of the world's sugar now comes from this particular commercial species.
F.
Unfortunately， however， the plant started to become weaker and more prone to disease.
【单选题】Talk to anyone in the drug industry,______ you'll soon discover that the science of genetics is the biggest firing to hit drug research since penicillin was discovered.
A.
or
B.
and
C.
for
D.
so
【简答题】Which of the following plays a key role in body growth according to the text? [A] Genetic modification. [B] Natural environment. [C] Living standards. [D] Daily exercise.
【多选题】What is the medical consequence when the peroxisomal system for fatty acid catabolism is defective due to genetic mutations?
A.
The peroxisomal system is much more active on very-long-chain fatty acids such as hexacosanoic acid (26:0) and on branched-chain fatty acids such as phytanic acid and pristanic acid. These less-common fatty acids are obtained from dietary intake of dairy products, the fat of ruminant animals, meat, and fish. Their catabolism in the peroxisome involves several auxiliary enzymes unique to this organelle.
B.
The inability to oxidize these compounds is responsible for several serious human genetic diseases. Individuals with Zellweger syndrome are unable to make peroxisomes and therefore lack all the metabolism unique to that organelle.
C.
In X-linked adrenoleukodystrophy (XALD), peroxisomes fail to oxidize very-long-chain fatty acids, apparently due to lack of a functional transporter for these fatty acids in the peroxisomal membrane.
D.
Both defects lead to accumulation in the blood of very-long-chain fatty acids, especially 26:0. XALD affects young boys before the age of 10 years, causing loss of vision, behavioral disturbances, and death within a few years.
【单选题】听力原文： Good morning, students. I hope you have read the two books about speech. Today's lecture deals with the presence of the unusually large deaf population that existed on the Massachusetts island o...
A.
At the library.
B.
In a lecture hall.
C.
On Martha's Vineyard.
D.
At a telephone laboratory.
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