京杭运河浙江段是（）时期开凿的。
A.隋文帝
B.隋炀帝
C.唐太宗
D.唐高宗
参考答案：B
A．30°
B．45°
C．60°
D．75°
They _____ England and they will be back next week. [ ]
A. have gone to
B. have been to
C. have gone in
D. has been on
