PREP2 - 83 求解(一道PREP笔记未包括的题)

83.  (28949-!-item-!-188;#058&004110)

The number of plant and animal species that humans are known to have forced to extinction in the last half millennium is over 800.

(A) humans are known to have forced to extinction

(B) humans are known as having forced to become extinct

(C) humans are known for forcing to become extinct

(D) are known that humans forced to become extinct

(E) are known as having been forced to extinction by humans

正确答案 A

请大家帮忙解释一下...

请大家帮忙解释一下...

(A) humans are known to have forced (that) to extinction?

(B) humans are known as having forced to become extinct

(C) humans are known for forcing to become extinct

(D) are known that humans forced to become extinct

(E) are known as having been forced to extinction by humans

(B),(E)错在as不能引导从句?

(E)是不是还存在歧义,known by humans or forced by humans?

黄金法则as后只能接句子，非短语哟~

谢谢 carolinelmf! 记住了~呵呵