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【判断题】
设一条DNA链上的A+G与T+C的比值是0.5,那么整个DNA分子上的这个比值也是0.5。A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】Mr．Smith has bought a lot of books for his daughter，__________he?
A.
hasn’t
B.
didn’t
C.
doesn’t
【简答题】企业期末结账时，应将各收入类科目结转为本年利润的贷方，结转后收入类科目应无余额。( )
【单选题】I bought a lot of gifts for my family, but he bought_____ .
A.
something
B.
anything
C.
nothing
【单选题】He saved a lot of money___he bought a new house for his marriage.他攒了很多钱因此买了结婚用的新房。
A.
so
B.
as
C.
unless
D.
though
【多选题】He bought a lot of things in the supermarket.
A.
daily necessities
B.
groceries
C.
stationery
D.
tools
相关题目：
【单选题】I bought a lot of gifts for my family, but he bought_____ .
A.
something
B.
anything
C.
nothing