Which one is not true?
A.Thousands cases of this disease have been found in India.
B.Most of the cases are found in northern province of Uttar Pradesh.
C.More than 800 have died.
D.Brent Burkholder is the leader of the Southeast Asia regional office of WHO.
第4题
A.2个手性碳原子,4个光活性异构体
B.3个手性碳原子,8个光活性异构体
C.2个手性碳原子,2个光活性异构体
D.3个手性碳原子,4个光活性异构体
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