这是KAPLAN里的一道题，我觉得答案比较牵强，想听听大家的看法：
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Paragraph 5:
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…… The problem is that enforcement of these requirements is often lax, and great differences in the quality of the food being served can be found. Some poorer schools count ketchup as a vegetable, while in higher income areas, the vegetables are often spinach, kale, or some other dark leafy green. The higher quality greens provide added iron……. L9 S# q3 \) `) \. v3 U2 N
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问题：
7 t( m5 i  }# s4 hIn paragraph 5, the author suggests that ketchup is NOT:4 C* J' y# y3 Y1 S) O
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(C) usually served in more affluent schools
7 }  }. ]# ]: R( Q(D) always considered a vegetable
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我选C，答案是D，以下是答案的解释：
7 x6 o8 H/ u; g' ?4 X5 Q. Y' q(D) is correct. The author contrasts the use of ketchup as a vegetable in poor schools with the use of dark leafy green vegetables in higher income areas.+ c7 |+ h5 r5 g2 ^# w% h# ?+ O
(C) is attractive because the author implies that ketchup is not a true vegetable. However, nothing is said about excluding it from affluent schools.
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1 \  J7 h3 X* T! p, T8 ~) ~& s既然前面的“great differences in the quality of the food”和后面的“The higher quality greens”都强调了食物质量不同，所以ketchup可能只是一种低质量的蔬菜，好学校不用不见得不认为ketchup是蔬菜。

我当时也是有点迷惑: C% p! T( J# [- @% e% v
不过问题不难想通7 @% W# j5 l( O
文章就是说 穷的学校把番茄酱当做蔬菜，富的学校有真正的蔬菜给学生吃- @4 z. r# D6 A
那选C就意味着 富的学校一般没有番茄酱。而这点文章没有提到。难道有丰富的蔬菜就意味着没有番茄酱么？ $ L: q" e* _* l( F8 x' v
按照推理来看，富的学校有丰富的蔬菜可以吃，番茄酱只是一种调料； 但是穷的地方没有蔬菜吃，只好把番茄酱当成蔬菜了。当然文章没有写这个，只是一个推理。所以选C没有文章根据啊。" q+ U7 O, V6 x0 P
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D是正确的，因为番茄酱在穷的学校被认为是蔬菜，在富的学校不被认为是蔬菜。所以“番茄酱并不永远被认为是蔬菜”6 B9 H) ~& O' a. z+ M

5 c3 W( E# b5 n- }" L9 \' F（楼主 你的最后一句话看了N遍没有看懂。。。 ）