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【单选题】
（14分）已知A.
B.
E是常见的非金属单质，C是导致酸雨的主要成分之一，Y是生活中常见的金属单质。D、K是重要的无机化工产品。X含有两种元素，具有摇篮式的分子结构，其球棍模型如图所示。H为白色沉淀。下列转化关系中部分反应条件和产物略去。 试回答下列问题 （1）X的化学式为： ▲ ；G的电子式 ▲ ； (2）反应④的化学方程式： ▲ ； 反应③的离子方程式： ▲ ； （3）①~⑥反应中属于氧化还原反应的是（填编号） ▲ ； （4）已知在真空中，将A与CuO按物质的量1：1反应可生成A 2 O。写出该反应的化学方程式： ▲ ； （5）依据实验中的特征实验现象，可确定Y是何种金属，该实验现象为 ▲ 。
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【简答题】听下面一段对话，回答第1-2题。 1. Why does the man want to buy the purple sweater online? A. It’s really cheap. B. It’s beautiful. C. It’s a very new style. 2. What is the relationship between the two speakers? A. ...
【简答题】电弧中的作用力主要包括____、____和____等。
【单选题】Why does the author say “Norman Vincent Peale deserved nothing less”?
A.
Because Norman died at the age of 95.
B.
Because Norman was the author of an all-time best-seller.
C.
Because Norman’s work has greatly influenced many people.
D.
Because Norman was one of his best friends.
【单选题】Why does the seller lodge a complaint?
A.
Shortage of goods
B.
Poor quality
C.
Higher price
D.
Damage of goods
【简答题】Why does the author say “Norman
Vincent Peale deserved nothing less”?A. Because Norman died at the age of 95. B. Because Norman was the author of an all-time best-seller. C. Because Norman’s work has ...
【简答题】电弧中的作用力主要包括电磁收缩力 、____和____等。
【多选题】how does the seller recommend the product?
A.
How about this pair of shoes
B.
The color matches you. Why don’t you try it on?
C.
I'll give you a discount of another 10%
D.
That looks great on you!
【单选题】Why does the auctioneer is interested in encouraging the competitors to bide
A.
To get a higher price.
B.
To increase his salary or service fees.
C.
To help the seller get a higher profit.
D.
To cheat the buyers to offer higher figures.
【简答题】电弧中的作用力主要包括电磁收缩力、（）、（）等
【简答题】Why does the seller give the buyer the opportunity to deal with the price increases?
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