点M(2,3,1)到平面x+y+3z-5=0的距离是()。
A.A
B.B
C.C
D.D
参考答案:B
Bob’s lectures ________ a fairly wide range and I can’t sum up what he says in a few sentences.
A.covered
B.conveyed
C.considered
D.commanded
______________,______________。春风又绿江南岸,明月何时照我还。