现阶段我国农村经济的支柱是()。
A.种植业
B.畜牧业
C.农业和乡镇企业
D.经济开发区
参考答案：C
Until we have discussed all the details, no decision _______ about any new operations.
A．will be made
B．is made
C．is being made
D．has been made
小麦秆锈病主要危害（），也危害叶片和穗部。
A.茎秆和叶鞘
B.茎秆
C.花和果实
D.叶鞘和花
