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【单选题】
对于还原性糖,可用下列哪个反应进行检识A.
Molish反应
B.
Fehling反应
C.
FeCl3反应
D.
Marquis反应
E.
Vitali反应
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反馈参考答案：
举一反三
【单选题】听力原文：W: You held a party last night. How many people were invited? M: We invited 75 people for my parents' 50th wedding anniversary, but only a third of them came last night. How many guests did they ...
A.
75 guests.
B.
50 guests.
C.
30 guests.
D.
25 guests.
【简答题】听力原文：How many boys does a typical house have in a public school? (9) B．15 C．40 D．60
【简答题】Space vegetables are grown from seeds (种子) that have been taken to space and brought back to the earth. The seeds are affected by the radiation (辐射) and low gravity in space. When they are brought bac...
【单选题】On June 11th, 2013, Shenzhou-10 carrying three astronauts into space from the space center in Jiuquan. All the Chinese people are proud of its successful launch.
A.
sent up
B.
are sent up
C.
was sent up
【简答题】How many typical people are there on Earth?
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