At the beginning of a semester,teachers might give their students a test to find out what they know and don't know. This is called_______.
- A、 proficiency test
- B、 diagnostic test
- C、 achievement test
- D、 aptitude test
正确答案:B
答案解析:有
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At the beginning of a semester,teachers might give their students a test to find out what they know and don't know. This is called_______.
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