1,1.414,1.732,2,()
A.3
B.
C.4
D.5
参考答案:B
The price of agriculture products _______ since the beginning of last year.
A.is going up
B.had gone up
C.went up
D.has been going up
当角的一条边与另一条边重合时,这个角就是0度。[ ]