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【单选题】
下列哪项不符合异丙醇试验A.
试剂pH为7.2
B.
异丙醇浓度为17%
C.
血红蛋白液应新鲜
D.
每次试验应做正常对照
E.
正常人呈阴性
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A.
are going to
B.
is going to c. are going D. is going
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A.
was exhibiting
B.
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C.
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D.
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【单选题】From the passage, we know that ______.
A.
Cheng Ho died on the way of his last voyage
B.
Cheng Ho ended his seventh voyage in 1433
C.
the disappearing of China's economic domination of the South Pacific led to Cheng Ho's death
D.
it took Cheng Ho 30 years to visit 37 countries
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