问题

olved,the problem of food safety may lead to more serious results

A:once
B:because
C:as if
D:unless

正确答案是：

同类题型

The lawyer rarely wears anything other than jeans and a T-shirt ______ the season

When we get on the bus, we should wait .

He would have paid _____ for his fridge had the salesman insisted, because he really needed it.

It is important to have your eyes examined regularly tocheck for any sign of eye disease that may not have any ________.

Little ________ about his own safety, though he was in great danger himself.