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【简答题】
目测法检查精子活率时（采用十级评分制），一般新鲜精液活率为（），应用新鲜精液人工授精的精子活率要求不低于（）。
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反馈参考答案：
举一反三
【单选题】Passage 2
A.
They think it is understandable.
B.
They find it hard to accept.
C.
They doubt whether it is necessary.
D.
They think it is a waste of time.
【简答题】Passage 2 A few foreigners work with an animal protection group to protect pandas.
【单选题】Passage 2
A.
They made improvements step by step.
B.
They were able to handle things well.
C.
They did things that could hurt them.
D.
They caused trouble they couldn't fix.
【简答题】胆囊管与肝总管汇合形成( )。
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