關務四等英文 第35題 - 考試

35. What is the advantage of the MouSensor over the HeroRat in detecting
landmines?
A)It runs faster in the field.
B)It is less expensive to buy.
C)It does not need a long training period.
D)It neutralizes the bomb more effectively

我選B

可是考選部答案給C

問題是文章只有提到the MouSensor is cheaper to manage

and easier to breed than the rats.

不是應該選可便宜買到?

原文也沒提到只需較短訓練時間...

附上原文


Scientists have genetically modified mice to enable them to sniff out
landmines, the explosives buried just below the
surface of the ground. They hope the GM mouse, known as MouSensor, could
become a useful tool to help deal with the
dangerous devices left from past wars.
Although it sounds peculiar, similar efforts have already been made. A
Belgian charity uses giant African HeroRats
to sniff out the chemical explosive, TNT. Two of these rats can clear an area
in less than two hours that would take two
people two days to do. One disadvantage of the HeroRat, however, is that it
needs nine months’ training before being
ready for landmine detection.
Scientists wanted to improve on the HeroRat concept by creating a “
supersniffer” mouse, MouSensor. They found
that a receptor in the lab mouse’s nose is sensitive to the odor of the
chemical elements in TNT and landmines. By
altering the genes of the mouse, scientists are able to enhance the
capability of its receptor 500 times stronger than before.
Besides having super sniffing power, the MouSensor is cheaper to manage and
easier to breed than the rats.
When the MouSensor detects the presence of a landmine, it would have some
sort of a seizure and faint because of
its extreme sensitivity of the explosives. And this change of the mouse’s
physical condition would trigger a chip implanted
under its skin to send a signal to a computer monitored by scientists. As a
result, the location of the landmine could be
identified, and a bomb-disposal expert could go in and neutralize it. The
mouse itself would be safe from the landmine,
since it would be too small to trigger an explosion.

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