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【多选题】
在商品经济中，使用价值、交换价值、价值三者之间的关系是A.
使用价值是交换价值或价值的物质承担者
B.
价值是交换价值的基础和内容
C.
交换价值是价值的表现形式
D.
使用价值和价值是对立统一的关系
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皮皮学刷刷变学霸
举一反三
【单选题】听力原文：As an increasing number of students now indulge themselves in cyber games, the government is taking measures to prevent students from haunting Internet bars. (27)
A.
More and more students now play cyber games in Internet bars after class, of which government failed to take notice.
B.
Due to the influence of cyber games on students, certain policies are adopted to prohibit students from frequenting Internet bars
C.
As students are crazy about cyber games, more and more Internet bars have been set up to meet the demands from students.
D.
The government has been taking measures to shut down as many Internet bars as possible.
【简答题】A、B、C、D分别是乙烷、乙烯、苯、乙酸的一种， （1）四种物质中只有A不属于烃类，也不能和H 2 反应； （2）B能与溴反应而使溴水褪色，一定条件下也能与H 2 反应转化为C； （3）D不能使Br 2 的CCl 4 溶液褪色，但加入溴水中充分振荡后会出现分层现象，溴水层无色；D也不能使KMnO 4 酸性溶液褪色； 根据上述事实填写下面的空格： A的分子式为______，A具有______气味； ...
【单选题】To cyber-enterprises, the key may be this : a virtual shop needs much the same attention and innovation ____ a real one.
A.
like
B.
as
C.
just like
D.
as like
【单选题】How to protect more kids from being harmed by cyber bullying?
A.
Work with other parents to take corrective action.
B.
Talk with cyber bullies about their dangerous behavior.
C.
Let appropriate authorities know about the cyber bullying.
D.
Participate actively in kids’ online activities and communication.
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