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【单选题】
DNA和RNA彻底水解后的产物A.
部分碱基不同,戊糖不同
B.
戊糖相同,碱基不同
C.
碱基相同,部分戊糖不同
D.
戊糖相同,部分碱基不同
E.
碱基相同,戊糖不同
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皮皮学刷刷变学霸
举一反三
【单选题】45 If many older physicians stop working in the coming years, Americans will hae
A.
een less access to medical serices.
B.
een better patient care.
C.
a shortage of younger physicians.
D.
more job opportunities.
【简答题】学习指导书P.126-P.127 P.129-P.130
【单选题】The most exciting aspects in our 45 years laboratory life are the exhilarating feeling when people reveal the mystery of the nature and the warm intellectual relationships between teacher and student.
A.
Y
B.
N
C.
NG
【单选题】45 The expression 'adding vital life to years' in the last paragraph means
A.
living longer.
B.
living well。
C.
living longer and well.
D.
living at any cost.
【单选题】If you want to be a taxi driver, you should ______. Taxi drivers wanted Full-time taxi drivers. Over five years’ experience, good knowledge of the city. Under 45 years old.
A.
be over 45 years old
B.
know the city well
C.
have 4 years’ experience
D.
work in your spare time
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