钢丝绳按其结构组成有6×19、6×24、()三种。
A、6×37
B、6×39
C、6×40
D、6×42
参考答案:A
He had an accident ______ to work and was badly injured.
A.driving
B.driven
C.to drive
D.drove
最先明朝中后期来到中国的西方殖民者是()