All science students,( ), should have a good foundation in basic sciences.
考试：
科目：（在线考试）
问题：
A：whether they are future physicists and chemists
B：they are future physicists of chemists
C：they should be future physicists of chemists
D：be they future physicists or chemists
答案：
解析：
【解析】本句双逗号的外围表达是句子主干（主句），双逗号之间是whether...or...引导的让步状语从句Whether they be future physicists or chemists省略whether后，再将be移至句首得来的省略倒装表达。
注意 whethertheybe ...or...中间的be是虚拟语气形式，其前面省略了 should；另，该形式经常改写为“省略+例装”的形式be it ...or...,以示进一步的强调。
A项错是因为whether对应的搭配应是or,即whether...or...,而非whether ...and...； B和C皆不能体现双逗号外围表达与双逗号之间表达的“让步”语义关系；此外，B和C代入后，双逗号之间就成了句子形式，而双逗号外围表达也是句子形式，两个句子缺乏连接词连接；当然两个选项自身对介词of的使用也存在问题。
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All science students,( ), should have a good foundation in basic sciences.
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