下列哪种标本查不到微丝蚴（）
A.尿液
B.血液
C.脑脊液
D.腹腔积液
E.鞘膜积液
参考答案：C
解析：脑脊液标本中查不到微丝蚴。
—Visitors need to know all the travel routes to Paris, ______?
—Sure. But The trip has not arranged.
A. do they B. need they
C. don't they D needn't they
在3Dmax中，隐藏选择物体（）。
A、Hide unselection
B、unhide all
C、Hide selection
D、unhide by name
