我国目前种植的棉花纤维长度一般在()mm范围内。
参考答案:27-31
卢沟桥事变后,日军大举进攻上海的事变是[ ]
A.九一八事变
B.一·二八事变
C.七七事变
D.八一三事变
Until the final votes are cast, though, assurances ______ for nothing.
A.count
B.meant
C.give
D.account