德育的途径主要有()
A．政治课教学
B．班主任工作
C．劳动
D．共青团活动
参考答案：A, B, C, D
—Do you know how to pronounce this word?
—Yes. I ______ in the dictionary yesterday. [ ]
A. looked it up
B. worked it out
C. gave it away
D. picked it up
全麻时引起呼吸道梗阻最常见的原因是
A．舌后坠B．咽喉部分泌物积蓄C．喉痉挛D．支气管痉挛E．气管导管阻塞
