问题

_____ three influenza type A virus subtypes（子类型） have been found in pigs．

A:where you are convenient
B:As far as
C:So far
D:Till far

正确答案是：

同类题型

You look worried. What’s your –I have trouble learning maths.

Is there any milk in the fridge-Sorry, there’s leftin it.

velopment of industry has been ____gradual process throughout _____ human existence, from stone tools to modern technology.

Whenever you a present, you should think about it from the receiver’s point of view

Excuse me! Could you tell me ____________— Sure. Go straight and turn right. It’s down BridgeStreet on your left.