I can't say which wine is best-it's a(n)

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问题选择题

I can't say which wine is best-it's a(n) _____ of personal taste.[ ]

A. affair

B. event

C. matter

D. variety

答案

答案：C

填空题

请你填入英文数字，使等式成立。

1. nine － seven = __________

2. eight + six = __________

3. __________ － five = ten

4. nine + four = __________

5. __________ － three = nine

单项选择题

羟苯酯类作防腐剂的常用浓度为（）%

A.0.0001～0.5

B.0.01～0.25

C.0.01～0.5

D.0.3～0.5