Most experts agree that human activities such as the clearing of large areas of forests, and farming on a large scale _________ the problem of global warming.

A．is leading to

B．is resulting in

C．are contributing to

D．are owing to

在检测柴油机油耗时，以下关于检测油路连接方法的说法哪项不正确（）

A.油耗传感器应并联在油路中

B.油耗传感器应连接在高压泵与喷油器之间的油路中

C.回油管路接在油耗传感器的出口管路上

D.回油管路接在油耗传感器的进口管路上