在运行猴车的巷道行走时,要在()行走,注意()、以免碰伤。
参考答案:人行道上,猴车座椅
--- The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?
---____ my students have a try?
A.Shall
B.Must
C.Will
D.May
白喉的传播途径有()
A.以飞沫传播为主
B.亦可经玩具、衣物间接传播
C.可通过污染的牛奶和食物引起暴发流行
D.偶可经破损皮肤、黏膜而感染
E.也可通过输血传染