单选题
No one can deny that pesticides have improved the ability of farmers to bring their crops to market. (1) pesticides, farmers no longer have to worry that they will lose an entire crop (2) an army of cut worms(毛虫)or fruit flies. (3) , Americans can rely on a large and varied food supply. However, we Americans need to become more (4) about the effects those pesticides on our food. More (5) , we need to think about what new (6) is necessary to protect ourselves from a (7) too rich in pesticide residue. If we don't demand greater (8) on pesticide use, we may be surprised, dismayed, and (9) horrified by the consequence of its use. On the most obvious level, farm workers who continue to use the pesticides (10) their present rate will be (11) serious disease. It's no (12) that farmers (13) to herbicides: have a six times greater risk of getting cancer. (14) , children who live in homes where pesticides are used have an increased chance of getting childhood leukemia (白血病). But the farmers are not the only ones (15) risk. Consumers may also suffer serious side effects from daily (16) of foods tainted (污染) by pesticides. Although scientists have yet to prove the link (17) , they are concerned that pesticide use may be one reason for the starting increase in various forms of cancer like breast and colon (结肠) cancers. We need new legislating that (18) stricter standards governing pesticide residues in food. Much of the current legislation is based on ignorance. Simply (19) , we allow high levels of carcinogens (致癌物) in our food because we don't know for sure that they do cause cancer in humans. Yet, why should we take the risk? If there's a chance that a pesticide causes cancer, then it should be (20) from use.
单选题
A.In spite of B.Thanks to C.Given D.Provided
【正确答案】
B
【答案解析】[解析] in spite of意为“尽管”;given意为“鉴于,考虑到”;provided意为“只要、假如”;均不合文意。thanks to意为“由于,幸亏”,在句中作状语表原因。
单选题
A.out B.on C.for D.to
【正确答案】
D
【答案解析】[解析] lose out意为“在竞争或比赛中失利,失败”,不符合文意。lose sth. to sb.意为“输给某人”,这里指毛虫吞食收成。
单选题
A.In sum B.In short C.In total D.As a result
【正确答案】
D
【答案解析】[解析] in sum意为“总而言之”;in short意为“简而言之”;in total意为“总共”,均不合文意。as a result意为“结果,因此”。因为该句与上句有明显的因果关系,所以选用as a result。