zinco

the answer is certainly E.

cnritter

答案肯定是E，D的意思不通

primefang

if C, posed不就修释/environment ???

cnritter

The answer must be E

redpot

Sorry for coming late because I was out of town these days.  According to the explaination, the correctiong answer was shown to be "E".  Although I didn't agree with it totally, it sounded reasonable.  "preseive sth. as" is a fix phase.  So is "threat to".  "threating to" sounds like wordy and unidiom.  However, I chose "B", and still I don't know why I shouldn't use "as" before "posed".  Thanks.

tongxun

原因：应该是先后不一致

redpot

So, which one do you think it is correct, BZ?