"One problem is old tests may not be the most effective study tool," she said.

“问题之一是，旧试题不一定是最有效的学习工具”她说。

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All of the tests that use the old controls will now be broken.

所有使用老控件的测试都将中断。

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All these tests have shown the great improvement of the new designs over the old.

所有这些试验显示，在旧新设计的一大进步。

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All these tests have shown the great improvement of the new designs over the old.

所有这些试验显示，在旧新设计的一大进步。

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