皮皮学，免费搜题
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【单选题】
取甘草粉末少许置白瓷板上,加80%H2SO4数滴显黄色,渐变为橙黄色,这是检测下列哪个成分A.
甘草苷
B.
异甘草苷
C.
甘草
D.
甘草新木脂素
E.
以上都不是
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举一反三
【简答题】Li Bai was a great p___ with great talent.
【单选题】When the sun comes out the flowers ______ by opening wide.
A.
act
B.
react
C.
interact
D.
active
【单选题】How many hours will the applicants work each week?
A.
16 hours
B.
18 hours
C.
20 hours
D.
24 hours
【判断题】The writer has interviewed many applicants for jobs, so he has abundant experience in how to get the job you want.
A.
正确
B.
错误
【单选题】There is a great deal of evidence ________ that music activities engage different parts of the brain.
A.
indicate
B.
indicating
C.
indicated
D.
to be indicating
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