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问题 选择题

公有制经济包括  [ ]

 ①国有经济 ②集体经济 ③私营经济 ④混合所有制经济 ⑤混合所有制经济中的国有成分和集体成分

A．①②

B．①②④

C．①②⑤

D．①②③④⑤

答案

答案：C

单项选择题 A2型题

在翼颌间隙手术中，术后出现同侧下唇、尖牙相对处颊黏膜创伤性溃疡（咬伤所致），原因是（）

A.下牙槽神经损伤

B.舌神经损伤

C.下牙槽神经的下颌舌骨肌支损伤

D.颏神经损伤

E.颊神经损伤
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问答题

(A) 条件(1)充分，但条件(2)不充分．
(B) 条件(2)充分，但条件(1)不充分．
(C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
(D) 条件(1)充分，条件(2)也充分．
(E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．

For a certain performance at a concert hall, a total of 2,350 tickets were sold in the orchestra, first mezzanine, and second mezzanine. How many orchestra tickets were sold
(1) The number of first mezzanine tickets sold was one-half the number of second mezzanine tickets sold.
(2) The total number of first and second mezzanine tickets sold was 50 percent greater than the number of orchestra tickets sold.
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