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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 本题为语法搭配题。根据题干，本题考点在make sth.possible这样一个词组上。 possible在本句中作主语补足语。本句大意为：计算机的运用使得天文学上的精确计算成为可能。
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