下列船舶不属于货船的是（）。
A、滚装船
B、推（拖）船
C、挖泥船
D、液化天然气船
参考答案：C
Our school sports meeting we had looked forward to______ in _______ fine weather, which was beyond our expectation.
A．falling; so
B．falling; such
C．fell; such
D．fall; so
外来化合物的巯基具有哪些特点？
