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【多选题】
（ ）召回方案有效性验证的办法包括（）A.
模拟召回
B.
实际召回
C.
验证性实验
D.
有效的召回程序文件
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反馈参考答案：
举一反三
【单选题】A potato farmer was sent to prison just at the time when he______have been digging the ground for planting the new crop of potatoes.
A.
must
B.
might
C.
could
D.
should
【单选题】Bill ______ a couch potato and now he has a healthy lifestyle.
A.
is
B.
used to be
C.
is used to being
D.
is used to be
【单选题】《反恐怖主义法》规定,任何单位和个人都有协助、配合有关部门开展反恐怖主义工作的( ),发现恐怖活动嫌疑或者恐怖活动嫌疑人员的,应当及时向公安机关或者有关部门报告。
A.
权力
B.
义务
C.
责任
D.
权利
【单选题】哪些人员或单位有协助、配合有关部门开展反恐怖主义工作的义务，发现恐怖活动嫌疑或者恐怖活动嫌疑人员的，应当及时向公安机关或者有关部门报告。（）
A.
任何单位和个人
B.
重点目标的管理单位
C.
大型活动承办单位
D.
非重点目标的管理单位
【单选题】听力原文： A potato farmer was sent to prison just at the time when he should have been digging the ground for planting the new crop of potatoes. He knew that his wife would not be strong enough to do the ...
A.
Because his wife was ill in bed.
B.
Because the farm work needed him badly.
C.
Because the weather was so bad that his wife could not dig up the land.
D.
Because his wife didn't know how to do any farm work.
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