我国空军最早的一架飞机是（）
A.列宁号
B.歼—5
C.歼教—1
D.雅克18
参考答案：A
—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
不属于胶质瘤的脑瘤是（）。
A.松果体瘤
B.髓母细胞瘤
C.室管膜瘤
D.颅咽管瘤
E.星形细胞瘤
