下列变化过程中，需要加入氧化剂的是

题干

下列变化过程中，需要加入氧化剂的是（）

A：HCl→H₂

B：FeCl₃→FeCl₂

C：H₂SO₄（浓）→SO₂

D：Fe→Fe₃O₄

上一题下一题 0.0难度选择题更新时间:2019-05-08 04:02:57

D

补全对话；从方框内所给句子中选择恰当的句子完成下面对话，并将其代表字母涂（填）在答题卡（纸）的相应位置。

( At the doctor's)

A: Good morning.

B: Morning doctor.

A:____

B: I'm not feeling very well.

A: Oh, let me see… ____ You are just overweight.

B: Really? But I don't eat too much.

A:____ You often eat sweet food and meat, don't you?

B: Yes, both of them.

A: To keep fit, you'd better eat less sugar but more vegetables. ____

B: OK, I'll do like that.

A: ____ .

B: Thank you very much.

A. Exercise can also help you lose weight.

B. What's wrong with you?

C. I hope you will get better soon.

D. Nothing serious.

E. Maybe your eating habit isn't good.