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1.        Downzoning, zoning that typically results in the reduction of housing density, allows for more open space in areas where little water or services exist.

(A) little water or services exist

(B) little water or services exists

(C) few services and little water exists

(D) there is little water or services available（E）

(E) there are few services and little available water

答案选E 有谁能告我关于there be的用法何时错何时对吗

services不是具体名词，there are表示一种自然存在，一般指的是具体名词...

ps:加一点个人猜想：where there are这个用法感觉挺累赘的...不如直接用where sth. exist.

好的 谢谢