人们可以将一个生物的遗传物质定向地转移到另一个生物体中，从而获得人类希望的遗传性状，创造出新的物种。这说明 [ ]

A．规律是可以认识和改造的

B．规律是可以被认识和利用的

C．人们在规律面前可以为所欲为

D．规律是人们改造世界的结果

— We quarrelled with the tallest girl in your class about the broken table .

— How silly ! You ____ it to our headmaster .

A．are going to tell

B．would have told

C．should have told

D．ought have told