Insect infestation in certain cotton-growing regions of the world have
caused dramatic increases in the price of coton on the world market. By
contrast, the price of soybeans has long reminaed stable. Knowing
that cotton plants mature quickly, many soybean growers in Ortovia plan
to cease growing soybeans and begin rasising 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 ture, most seriously weakens the plan's chances for sucess?
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 sfae and effecitve against the insects that
have infested cotton corps.
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 consumeers 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?
Answer is B? Why 作者: grasses 时间: 2005-8-29 16:18
B
廉价优质杀虫剂的出现，可以提高棉花的产量，从而使棉价回落。
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