⑴____ A.Bund B.found C.Summer Palace D.Great Wall
⑵____ A.visited B.beside C.saw D.caught
⑶____ A.why B.where C.who D.did
⑷____ A.our B.we C.they D.he
⑸____ A.cloud B.windy C.rainy D.sunny
从抛物线x2=2y上任意一点M向圆C:x2+y-22=1作切线MT,则切线长MT的最小值为( )