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【单选题】
要鉴别己烯中是否混有少量甲苯，正确的实验方法是（ ）A.
先加足量溴水，然后再加入酸性高锰酸钾溶液
B.
先加足量的酸性高锰酸钾溶液，然后再加入溴水
C.
点燃这种液体，然后再观察火焰的颜色
D.
加入浓硫酸与浓硝酸后加热
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皮皮学刷刷变学霸
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【单选题】患儿女,2岁,肺炎,T39.1°C、P98次/分、R30次/分,咳嗽,痰不易咳出,颜面潮红。其中一项护理诊断为体温过高。该护理诊断的必要根据是
A.
皮肤发红、触之有热感
B.
体温高于正常范围
C.
呼吸、心跳均加快
D.
痰液不能排出
E.
不能出汗
【单选题】What does the man say about the criticism of technology?
A.
Ignore the criticism.
B.
We need to consider what technology may bring us.
C.
He feels bad about the criticism.
D.
He thinks the criticism is far-fetched.
【单选题】What does the story " The man with the horn" mainly tell us?
A.
It tells us of the famous jazz musician Louis Armstrong
B.
It tells us how Louis came to play his horn
C.
It tells us how people loved Louis and his horn
【单选题】What does the conversation tell us about the new job the man is talking about?
A.
It will offer him a better opportunity for career development.
B.
It requires a lot of experience in business management.
C.
He is quite confident that he can get it.
D.
He has to be in interviewed twice for the job.
【单选题】What does the conversation tell us about the new job the man is talking about?
A.
It will offer him a better opportunity for career development.
B.
It requires a lot of experience in business management.
C.
He is quite confident that he can get it.
D.
He has to be interviewed twice for the job.
【单选题】What does the man say about the criticism of technology?
A.
We should ignore the criticism.
B.
We need to consider what technology may bring to us.
C.
He feels bad about the criticism.
D.
He thinks the criticism is far-fetched.
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