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【判断题】
医学上的酮体并不都是酮类化合物
A.
正确
B.
错误
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【单选题】I do not think it wise for Judy to lose weight by substituting fruit_______.
A.
with
B.
for
C.
as
D.
by
【多选题】人体色是由于我们体内含有三种色素。这三种色素分别是(多选题)
A.
呈现红色的血红色素
B.
呈现黄色的核黄色素
C.
呈现茶色的黑色素
D.
呈现白色的米色素
【单选题】I do not think it to park our car here.
A.
advice
B.
advise
C.
advisable
【单选题】the Internet is        , I do not think it is a good idea to spend too much time on it.
A.
When; greatly beneficial
B.
As; a great benefit
C.
While; of great benefit
D.
Now; of no benefit
【简答题】燃烧是人类最早利用的化学反应之一,与我们的生活、社会的发展有着密切的联系.以下是关于燃烧的三个实验,请回答问题. 实验1、a、b、c三处物质中能够燃烧的是______(填字母序号),该反应的化学方程式为______. 实验2、集气瓶中充满氧气,胶塞处装有一对石墨电极,分别接到电源的正负两极,电极之间连有一段很细的铁丝.实验时,通入20V的直流电,能够看到铁丝剧烈燃烧.从燃烧的条件的角度分析产生以上...
【单选题】We should take ____ active part in the battle to stop the germs.
A.
the              
B.
an              
C.
/
【多选题】人体色是由于我们体内含有三种色素。这三种色素分别是
A.
呈现黄色的核黄色素
B.
呈现红色的血红色素
C.
呈现茶色的黑色素
D.
呈现白色的米色素
【简答题】translate the following sentence into chinese. I now take a more active role, aiming to make meetings more effective.
【简答题】Common sense would tell us that physically active children may be more likely to become active and healthy s. In the United States, elementary and middle schools are advised to give students two ...
【单选题】What does it take to be an active listener?
A.
Reliable hearing.
B.
Active thinking and imagination.
C.
Tremendous concentration and willpower.
D.
Excellent communication skills.
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