皮皮学，免费搜题
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【单选题】
被誉为中国“新四大发明”的复方甲醚是第一个由中国发现的全新化学结构的药品，也是目前在国际上获得广泛认可的中国原创药品。至今已被多个亚非国家指定为疟疾治疗一线用药，它在疟疾这一高传染性疾病治疗史上具有里程碑意义。其主要成分是青素（是一种由青中分离得到的具有新型化学结构的抗疟药），结构如图所示。有关该化合物的叙述正确的是(    )
A.
分子式为：C 16 H 22 O 5
B.
该化合物在一定条件下不能与NaOH溶液反应
C.
该化合物中含有过氧键，一定条件下有氧化性
D.
青蒿素与维生素一样是水溶性的
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At the airport.
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In travel guides.
C.
On the Internet.
D.
At the travel agency.
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【单选题】Conversation 2:Q2
A.
B.
C.
D.
D
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【单选题】CONVERSATION 2 - Q2
A.
He is surprised.
B.
He is not surprised.
C.
He doesn’t believe it.
D.
He is not interested.
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【单选题】以下表示基础设施即服务的术语是_______?
A.
SaaS
B.
PaaS
C.
IaaS
D.
AaaS
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【单选题】CONVERSATION 2 - Q2
A.
Public speaking is the No. 1 fear in North America.
B.
Public speaking is the No. 1 fear across the world.
C.
People in North America don’t like public speaking.
D.
Most people think it difficult to get over the fear of public speaking
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【单选题】CONVERSATION 2 - Q2
A.
He is self-employed.
B.
He is a full-time technician.
C.
He is working in an office.
D.
He is unemployed at the moment.
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【单选题】Conversation 2:Q4
A.
B.
C.
D.
D
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【单选题】早期妊娠出现最早最重要的症状是
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早孕反应
B.
尿频
C.
乳房胀痛
D.
停经
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【单选题】Long Conversation: Q2
A.
B.
C.
D.
D
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【单选题】CONVERSATION 2 - Q2
A.
He gave a TED Talk.
B.
He mentioned luck in his talk.
C.
He talked about interesting things.
D.
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【单选题】CONVERSATION 2 - Q2
A.
At the airport.
B.
In travel guides.
C.
On the Internet.
D.
At the travel agency.
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【单选题】Conversation 2:Q2
A.
B.
C.
D.
D
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【单选题】CONVERSATION 2 - Q2
A.
He is surprised.
B.
He is not surprised.
C.
He doesn’t believe it.
D.
He is not interested.
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【单选题】以下表示基础设施即服务的术语是_______?
A.
SaaS
B.
PaaS
C.
IaaS
D.
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【单选题】CONVERSATION 2 - Q2
A.
Public speaking is the No. 1 fear in North America.
B.
Public speaking is the No. 1 fear across the world.
C.
People in North America don’t like public speaking.
D.
Most people think it difficult to get over the fear of public speaking
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【单选题】CONVERSATION 2 - Q2
A.
He is self-employed.
B.
He is a full-time technician.
C.
He is working in an office.
D.
He is unemployed at the moment.
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【单选题】Conversation 2:Q4
A.
B.
C.
D.
D
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【单选题】早期妊娠出现最早最重要的症状是
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早孕反应
B.
尿频
C.
乳房胀痛
D.
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【单选题】Long Conversation: Q2
A.
B.
C.
D.
D
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【单选题】CONVERSATION 2 - Q2
A.
He gave a TED Talk.
B.
He mentioned luck in his talk.
C.
He talked about interesting things.
D.
He had a great passion for talks.
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