黄土高原农作物的熟制主要是[ ]
A.一年三熟
B.一年一熟
C.随时播种,四季都有收获
D.一年两熟或两年三熟
答案:D
The goods which do not pass through the territory by land but call for a change of the means of transport at a place with a Customs establishment is defined as ().
A. transit goods
B. transhipment goods
C. through goods
D. import and export
驾驶机动车在有这种标志的路口怎样通过最安全?()
A.停车观察路口情况
B.加速尽快进入路口
C.减速观察左后方情况
D.减速缓慢进入路口