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【单选题】
在设计条件宏时，对于连续重复的条件，要代替重复条件表达式可以使用符号（ ）。A.
…
B.
：
C.
!
D.
=
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【多选题】Which of these sentences are true about cloud seeding, according to the passage?
A.
China carries out more cloud seeding than anywhere else.
B.
Cloud seeding is too expensive for most countries.
C.
Cloud seeding is mostly done for scientific rather than economic reasons.
D.
Cloud seeding helps turn dry areas of land into agricultural areas.
E.
Cloud seeding may affect the distribution of rainfall.
【简答题】These sentences are about the reading. Complete them with the target words and phrases in the box.
【简答题】These sentences are about the reading. Complete them with the target words and phrases in the box.
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