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  3. Calculations, which are astronomically exact, have been made______with the use of computers.

Calculations, which are astronomically exact, have been made______with the use of computers.

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问题 Calculations, which are astronomically exact, have been made______with the use of computers.
选项 A、possible
B、it possible
C、possibly
D、to be possible
答案A
解析 这是一个固定句型。由make…possible变化而来。
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