中国气象局于2010年1月2日启动寒潮Ⅳ级应急响应，以针对北京、天津、河北、山西、内蒙古等地明显的大风、降雪天气。据此完成各题。决定风力大小的主导因素是
| A．地转偏向力 | B．水平气压梯度力 | C．摩擦力 | D．地形 |
造成这次寒潮的天气系统是
| A．甲 | B．乙 | C．丙 | D．丁 |
_____, experts point out that students can easily fail at starting their business because of a lack of preparations.
| A．But | B．However | C．while | D．though |
It has always been the _____ of our goverment to encourage graduates to start their business.
| A．plan | B．campaign | C．procedure | D．policy |
The most important _____ of his speech at the G20 summit was that we should all unite to fight against the finanical.
| A．element | B．spot | C．view | D．point |
He directed exposure to pigs,otherwise he_______pig flu.
| A．couldn’t get | B．wouldn’t have gotten | C．couldn’t have got | D．woud get |
In no time _______ me if he had any further information for pig flu..
| A．will he declare | B．he would notice | C．would he notify | D．he will note |