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问题
单项选择题 A1/A2型题
进行试剂质控应在（）。
A.试验前
B.试验中
C.试验后
D.怀疑试剂有问题时
E.怀疑实验结果不准确时
答案
参考答案：
A
填空题
从方框中选词并用其适当形式填空。
thriller learn kind like funny
1. I think Paul Jackson's comedies are really ________.
2. Maria wants to ___________ English. She thinks it's easy.
3. There are many _______ of clothes in the store.
4. Jack _____ action movies.
5. She doesn't like ___________.They are scary.
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选择题
The poor boy _____ lost both his parents last year is called Mike.
A. which
B. what
C. who
D. ／
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