我国古代丝绸之路的起点是[ ]
A．长安
B．洛阳
C．玉门关
D．阳关
答案：A
在Rt△ABC中，∠C=90°，若a=6，b=8，则c=______．
The most important thing about cotton in history is ________ part that it played in _______ Industrial
Revolution. [ ]
A. /; /
B. the; /
C. the; the
D. a; the
