“棍棒底下出孝子”是受（）因素影响。
A.遗传
B.环境
C.教育
D.传统舆论
参考答案：C
心搏骤停抢救时首选的药物是|
A.肾上腺素
B.人工呼吸
C.多巴胺
D.利多卡因
E.阿托品
---- Do you know our town at all?
---- No, this ______ the first time I ______ here.
A．was; has come
B．is; come
C．is; had come
D．is; have come
