以下哪种措施可以预防血吸虫病()
A、下田劳作时,不赤足
B、使用无害化厕所
C、不到不了解的水域游泳
D、以上都是
参考答案:D
根据句意,补全已给出首字母的单词。
1.---Hello,class! Is everyone p_____ today?
---No, Lin Tao is ill so he is a_____.
2.PE lesson stands for p_____ education.
3.F_______(幸运地),we don't have exams in every subject.
4. We have a large sports ground where we play football ,tennis and do a______(田径运动).
5.-Which subject do you like most?
-B_____ and G______.They are really interesting and useful.
FIDIC施工合同条件中的担保期限至( )为止。
A.承包商圆满完成施工义务
B.承包商圆满完成施工和保修义务
C.监理工程师分发接收证书
D.承包商收到最后一笔尾款