在建设工程风险对策中,预防损失的具体措施有( )。
A.组织措施
B.技术措施
C.经济措施
D.合同措施
E.管理措施
参考答案:A,B,D,E
根据句意及首字母或汉语提示完成单词。
1. I grow many trees and f______ in my garden.
2. My parents o______ a birthday party for me every year.
3. If you use a mobile phone in the class, the teacher will t______ it away.
4. What did you do on the school ______ (大扫除) yesterday?
5. Students must obey school ______ (规矩) at school.
下列生物分类的等级中,生物之间共同特征最多的等级是( )
A.界
B.门
C.科
D.种