The best title for this selection is（）
A. The "Post Paid" Error
B. The Two Penny Blue
C. A Rare Stamp
D. How Mauritius Became Famous
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2002年7月，建设部、国家丁商管理总局联合颁发( )。
A. 《建设工程设计合同文本》
B. 《建设工程勘察合同文本》
C. 《建设工程造价合同示范文本》
D. 《建设工程委托监理合同》
The best title for this passage is ()
A. Crime--A Grave Problem in the West
B. Chevrolet--A Make of an Old Car
Computer--A Powerful Aid in Fighting Against Crime
D. Police--A Useful Force in the Fight Against Crime
I wish I ______ you yesterday.
A. seen
B. did see
C. had seen
D. were to see
21（）
A. one
B. two
C. three
D. four
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