通常,燃料的消耗费用占到汽车运输成本的()左右。
A.47%
B.57%
C.37%
D.27%
参考答案:C
一David is outgoing.
— _____Both of them are popular at school.
A.So is Tom. B.So he is. C.Neither does Tom.
在类中,______成员为类的所有对象所共享。