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【单选题】
在人行道等人员来往密集场所安装的落地式景观照明灯具,无围栏防护,安装高度距地面( )以上。A.
1.5m
B.
2.5m
C.
3.5m
D.
2m
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【单选题】According to the passage, which of the following is true?
A.
Most people believe childhood leukaemia is due to environmental factors.
B.
Population mixing best explains the cause of childhood leukaemia.
C.
Radiation has nothing to do with childhood leukaemia.
D.
Children born in a large town are at higher risk of leukaemia.
【单选题】Astronomers believe that matter in different parts of the universe______.
A.
has different laws
B.
has one common law
C.
shares the same laws
D.
shares no common law
【简答题】1895年丹麦植物学家____《以植物生态地理学为基础的植物分布学》的出版和1898年波恩大学____《以生理为基础的植物地理学》问世,标志着生态学作为一门生物学分支科学的诞生。
【单选题】________You explain it ,l will not believe you.
A.
What
B.
Whatever
C.
No matter what
D.
No matter how
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