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【判断题】
春秋时期的老子是道家学说的创始人,主张清静无为、淡泊名利、寄情山水而著称,A中国人的思想和文化影响甚大A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】The scientists are not sure______.
A.
how long the ice age lasted
B.
where ice sheets melted during the ice age
C.
what caused the temperature changes
D.
what the earth is made up of
【单选题】The scientists are studying the effects of human activities______the environment.
A.
in
B.
at
C.
on
D.
with
【单选题】The world's population is getting larger and larger, so the scientists are trying to new ways to solve the food problem. [ ]
A.
devote to
B.
pay for
C.
come up with
D.
catch up with
【单选题】The scientists are able to ____________ accurately when the spaceship will reach the moon.
A.
accumulate
B.
calculate
C.
appoint
D.
estimate
【单选题】关于对称与均衡的描述错误的是 。
A.
对称是以一条线为中轴，形成左右、前后或上下在量上的均等
B.
均衡是对称的一种延伸，是事物的两个部分在量上大致相当
C.
对称是均衡的，但均衡不一定对称
D.
不对称均衡又叫静态均衡
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