一个好的听力保护用品，无论是耳塞还是耳罩应该具备哪些特点。（） A.与耳部的密合要好

指出下列错误的是

A．白附子善治风痰
B．天南星善治顽痰
C．白芥子善治寒痰
D．瓜蒌善治燥痰
E．昆布善治湿痰

---Whose advice do you think I should take?

--- ________ .

A．You speak

B．That's it

C．It's up to you

D．You got it

最重要的可控制的中风危险因素是（）。

A.高胆固醇和高脂血症

B.糖尿病

C.吸烟

D.高血压病

E.高血黏稠度

— Is Tom still smoking?

— No, it's a long time ______ he smoked. By next Saturday he ______ for three months without

smoking a single cigarette.[ ]

A. that, will be going

B. after, will have gone

C. since, will have gone

D. before, has gone

利用下列实验装置及药品(依次为①—④)能完成相应实验的是

A．实验①测定化学反应速率

B．②能证明非金属性 Cl＞C＞Si

C．实验③制取并收集NH₃

D．滴定法测定盐酸浓度