某活动小组用废铜制取硫酸铜溶液,实验过程为: ⑴废铜在空气中加热后得到的氧化铜

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问题:

某活动小组用废铜制取硫酸铜溶液,实验过程为:

⑴废铜在空气中加热后得到的氧化铜中含有少量铜,原因是________(填字母序号)。

a.加热时氧化铜易分解生成铜  

b.铜与氧气没有完全反应  

c.加热时铜不能与氧气反应

⑵操作Ⅰ的名称是,该操作用到的玻璃仪器有:玻璃棒、烧杯、         

⑶盛放硫酸铜溶液不宜用铁制容器的原因是(用化学方程式解释)                

考点:金属的化学性质S,Fe,C,P等物质在氧气中的燃烧二氧化碳的性质实验金属活动性
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选择下列词汇或短语完成下面对话。
A. go shopping      B. received      C. attend      D. idea      E. sooner      F. miss
Nina: Are you going to Jane's birthday party, Wendy?
Wendy: Yes. I _______ (1) her invitation yesterday. Are you going tomorrow, Nina?
Nina: Yes, of course. I wouldn't _______ (2) her birthday party for anything.
Wendy: Could you tell me what I should take as a birthday present?
Nina: I was going to ask the same question.
Wendy: We must hurry. The _______ (3), the better.
Nina: I can't agree more. Well,I'll tell you what. Let's _______ (4) together right now and pick
         out what she may like.
Wendy: Good _______ (5).
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虫积证腹痛的特点为()

A.腹痛暴急,剧烈拒按

B.小腹胀痛,小便不利

C.小腹刺痛,小便自利

D.少腹冷痛,牵引阴部

E.绕脐痛,起包块,按之可移

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休止芽

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AIDP需与下列哪些疾病鉴别()

A.脊髓灰质炎

B.周期性麻痹

C.急性脊髓炎

D.全身型重症肌无力

E.运动神经元病

题型:填空题

1999年以来,我国先后建立了()个国家级森林病虫鼠害中心测报点(简称国家级中心测报点)。

A.183

B.510

C.490

D.1000

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