该图是某区域地图，读图完成问题。

小题1:图示河段的流向是(　　)

A．由南向北

B．由东向西

C．由西南向东北

D．由东南向西北小题2:若测得a、b两点的图上水平距离为2.5厘米，判断a、b两点间山坡的土地利用方式应为(　　)

(tan15°≈0.268　tan25°≈0.466　tan35°≈0.700)

— After the 2008 Olympic Games, more and more people in western countries begin to learn Chinese ______

     they can better understand the culture of China.

— I'm sure they will. [ ]

A. even though

B. so that

C. because of

D. as if