题目内容
The level of an area of land must be even to support a train’s weight properly. （ _ _ a _ e）
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The system of support beneath train tracks is comprised of three primary parts. （_ _ b _ _ r _ _ t _ _ _）
The programs are usually written in a high-level (), such as C, BASIC, COBOL, or Java.
() converts all the statements in a program in a single batch.
() converts and executes one statement at a time while the program is running.
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