风疹传播的主要途径()
A.经食物传播
B.经污染的日用品、玩具传播
C.经皮肤破损处侵入
D.经排泄物传播
E.经带病毒的飞沫传播
参考答案:E
用括号中所给动词的适当形式填空。
1. There’s no reason ________ (come) to school late today.
2. I ________ already ________ (finish) my homework, so I can play now.
3. Email English is a new kind of ________ (write)English in the modern world.
4. Many man-made satellites ________ (send) up into space so far.
5. It's my turn ________ (clean)the classroom.
煤矿“三大规程”指的是()。
A、煤矿安全规程
B、矿山救护规程
C、事故报告处理规程
D、工种操作规程
E、技术作业规程