头发的化学性能使头发具有().
A.伸缩性
B.可塑性
C.弹性
D.膨胀性
参考答案:B
The number of the students in that school ________ three thousand.[ ]
A. are
B. is
C. have
D. has
客运列车标志:()。工程列车尾部须设有标志灯。