目前国内外普遍采用挡渣挡渣方法有（）。
A.挡渣球
B.挡渣棒（塞）
C.挡渣锥
D.气动阀（气动挡渣）
E.都不对
参考答案：A, B, C, D
若|a+2|+（b-3）2=0，则（a+b）2008=______．
根据句意，填入适当的词完成句子
1. — ________ is your birthday?
—It's August 22nd.
2. The ____month of a year is March.
3. May is the ________ month of a year.
4. —How ____ are you?
—I'm eleven.
5. His little son is twelve years old. Today is his _______ birthday.
6. The 9th month of a year is ____.
7. What's the ________ of his birthday?
8. Today is your birthday. ________ birthday to you.
9. —Which ________ do you like best?
—It's March.
10. The ____day of a year is New Year's Day.
