For days smog persisted in many areas. China is（

For days, smog persisted in many areas. China is to control air pollution.A、taking mea

The total cost in logistics in China is still higher than（)in many other industrialized countries.

China has many islands, ____ the largest is Taiwan.A、in whichB、at whichC、of which

A．It is a serious endemic disease in some areas of northwest China.B．It may lead to br

In some areas China is（)the developed countries, but it will take some years before w

China and Australia in many areas share ______ common interests and basis for cooperation.