对大多数的树木而言，昼夜温差大不利于树木生长。( )
参考答案：错
在咨询过程中来访者常常发生“不知从何说起”的情况，这种沉默属于（）。
A.缄默
B.自发性沉默
C.冲突创造性沉性沉默
D.爆发性沉默
When the seller pays for all charges up to an including the loading of a consignment on board the carrying vessel, the term is ______.
A．CIF
B．FOB
C．CFR
D．CPT
