总价()。
A.502/4800.00
B.4800.00
C.4800.00USD
D.美元4800.00
参考答案:B
She is a bit shy and _______ stand up and answer the teacher’s questions.
A.dares not
B.doesn’t dare
C.dare not to
D.dares not to
碎石的超径、逊径含量检测频次为()。
A.1~2次/天
B.1次/2天
C.1次/小时
D.2次/小时