掘进工作面要备有灭火器材。
参考答案:对
Nobody could have had _____ childhood than myself. Instead of children’s play and adventure , I was driven by a desire to study.
A.the happier
B.a happier
C.happier
D.the happiest
排球运动起源于()国。
A.美国
B.英国
C.古巴
D.日本