设集合M={-1,0,1},N={x|x2≤x},则M∩N=[ ]
A.{0}
B.{0,1}
C.{-1,1}
D.{-1,0,0}
答案:B
用括号内动词的适当形式填空。
1. Little Jack ______ (be) here a moment ago.
2. Amy ______ (meet) a famous actor yesterday.
3. Miss White ______ (come) to China in 2005.
4. There ______ (be) forty-three students in our class last term.
5. I ______ (visit) my grandparents last Sunday.
施工单位向建设单位出具工程质量保修书内容包括( )。
A.竣工图
B.保修范围
C.保修期限
D.保修责任
E.保修承诺