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Except in special situations human beings' battle with mosquitoes will not be won by a simple campaign to eliminate the insects, social tradition and habits, it seems, do much to ensure continual contact between mosquitoes and people. On the slope of Mount Kilimanjaro, for example, mosquitoes breed in the leaf axils and a plant called Dracaena. Although Dracaena is not a food plant for humans, it's uses as a hedge boundaries maker is deeply rooted in tradition.+ e- {3 d,
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Here, as in other parts of the world, human behavior ensures contract and conflict between people and mosquitoes. I'm not advocating a policy of live and let live; We already know that living with mosquitoes is very unpleasant. But until we accomplish that different task of understanding how our habits often perpetuate- even create-our problems, efforts to resolve our battle with mosquitoes will probably fail.2 M.
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17. The passage is primarily concerned with
A discussing shortsighted proposals to eliminate problems with mosquitoes
B outlining ways in which people can alleviate the problems with mosquitoes, e2 q: r& i9 @% d( L0 e: `2 G% h4 d } A
C arguing that social traditions can perpetuate people’s problems with mosquitoes/ L( U& U' B. A1 K: G# n6 E7 t
D discussing various ways in which people come into contact with mosquitoes3 _* F( e9 v0 C a+ h3 R! ~
E suggesting how the bleeding habits of mosquitoes create problem for people `9 ` Z8 f- \9 }2 D
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18. According to the passage, which of the following statements abouts the interaction between people and mosquitoes
A Mosquitoes can breed in the leaves of most of the plants people grow for food$ [. T* Y8 {" R/ V9 @
B Human actions can perpetuate the struggle between people and mosquitoes0 ^; \" U+ k. P# b, e3 G
C The most effective way to solve the mosquitoes problem is through elimination of the insect
D 缺
E 缺
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19. The author mentions the plant Dracaena primarily in order to3 U( ~0 p2 W; G5 m
A present an exception to pattern described in the previous sentence4 i. U+ e( v- j5 }
B illustrate the reasoning of other researchers9 _1 T2 M3 B/ a4 f# B: b
C contrast modern and traditional ways of dealing with a mosquito problem
D provide an example to support the preceding statement
E anticipate an argument that could be made against one of the author’s assertions
20. Which of the following best describes the organization of passage! y. C+ `" Q& Z7 v, g: w
A A hypothesis is presented, weighed and qualified, and then the modified hypothesis is reaffirmed
B An argument is advanced, then it is refuted, and an alternative is suggested. N3 [. {8 c8 J$ q: } @7 N& n+ \
C A thesis is presented, a supporting example is provided, and then the thesis is reaffirmed
D opposing vies are presented, evaluated, and then reconciled( ^( ^! [: a" t: q) ~. \, A% o0 M
E A theory is proposed, considered, and amended