In the service of WhipCar, in order to guarantee the reliability of both parties the most indispensable step is to______.
A．ensure the authenticity of the identification of both parties
B．make both parties sign a contract made by car-sharing firms
C．ask for the detailed information of both parties in rental
D．make sure that both parties are satisfied with each other

单项选择题下列指标中，反映企业偿债能力的是()。

未分类题Shanghai is one of the largest cities in the world that______large populations each over ten million.A．hasB．haveC．hadD．are

未分类题What does the author intend to say by the last paragraph?A．To tell us why car renting is so popular now.B．To tell us the promising future of car-sharing.C．To tell us the huge cost of keeping a private car.D．To tell us the current situation of U. S. car market.

单项选择题下列项目中，不属于会计记录专门方法的是()。

未分类题In the first paragraph, the author introduces his topic by______.A．posing a contractB．justifying an assumptionC．making a comparisonD．explaining a phenomenon