1. [单选题]电镜下质膜呈现三层结构。( )
A. 正确
B. 错误
2. [单选题]The last sentence“And everyone knows what happens next”implies that in such cases ．
A. farm animals will be in danger and have to be shipped away
B. woIves will kill people and people will in turn kill them
C. wolves wilI find enough food sources on famls
D. people will leave the areas where wolves can live
