[CR. ] GWD-CRu 一題請教
Insect infestations in certain cotton-growing regions of the world have
caused dramatic increases in the price of cotton on the world market. By
contrast, the price of soybeans has long remained stable. Knowing that
cotton plants mature quickly, many soybean growers in Ortovia plan to cease
growing soybeans and begin raising cotton instead, thereby taking advantage
of the high price of cotton to increase their income significantly, at least
over the next several years.
Which of the following, if true, most seriously weakens the plan's chances for
success?
A）The cost of raising soybeans has increased significantly over the past
several years and is expected to continue to climb.
B）Tests of a newly developed, inexpensive pesticide have shown it to be both
environmentally safe and effective against the insects that have infested
cotton crops.
C）In the past several years, there has been no sharp increase in the demand
for cotton and for goods made out of cotton.
D）Few consumers would be willing to pay significantly higher prices for cotton
goods than they are now paying.
E）The species of insect that has infested cotton plants has never been known
to attack soybean plants.
正确答案 B
想問問d為什麼不能weaken??
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