求助prep2-81答案是否有错！

cyang16

Both the caribou and the reindeer belong to the species Rangifer tarandus, but after 7,000 years of domestication in Eurasia, reindeer have developed a tendency to circle in tight groups, while caribou tend to spread far and wide.

(A) belong to the species Rangifer tarandus, but after 7,000 years of domestication in Eurasia, reindeer have developed a tendency to circle in tight groups, while caribou tend
(B) belong to the same species, Rangifer tarandus, but about 7,000 years of domestication in Eurasia have developed reindeer's tendency to circle in tight groups, which is different from caribou that tend
(C) belong to the species Rangifer tarandus, but being domesticated in Eurasia for about 7,000 years has developed reindeer's tendency to circle in tight groups, and that is different from caribou tending
(D) are the same species, Rangifer tarandus, but about 7,000 years of domestication in Eurasia have developed reindeer's tendency to circle in tight groups, while the tendency is for caribou
(E) are the same species, Rangifer tarandus, but being domesticated in Eurasia for about 7,000 years has developed the reindeer's tendency to circle in tight groups, which differs from caribou tending

正确答案A，但是我觉得reindeer have 中，reindeer应该用单数的has，这应该是属于绝对错误吧

sprtng

reindeer have developed a tendency to circle in tight groups, while caribou tend
这样，一个是现在完成时，WHILE后面是一般现在时，这样算不算没有时态保持一致了？

-- by 会员 tlswa (2009/12/14 15:49:29)

这里不算。。。reindeer的tendency是7000年来形成的， 后面的tend是阐述caribou会倾向于什么， 不是过去倾向于什么。。我遇到这种题， 一般不只从时态看， 结合句意一起分析效果最好。。。

smbody

这道题目可以用排除法来看，7000 years哦分的哦么身体擦提哦你in Eurasia如果做句子的主语，后面的谓语应该是单数，BC
D都可以排除了

tlswa

reindeer have developed a tendency to circle in tight groups, while caribou tend
这样，一个是现在完成时，WHILE后面是一般现在时，这样算不算没有时态保持一致了？

moonlolita

对啊，deer……天呢小学语法他都考

zanyingsan

其实reindeer的复数是可以还是reindeer的。~