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【单选题】
小张今天背了20个英语单词。根据艾宾浩斯遗忘曲线，他应该怎么复习这20个单词？A.
一后复习
B.
三天后复习
C.
把全书背完了再复习
D.
第二天就复习
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举一反三
【简答题】The commander ordered that we (withdraw) ______ as soon as possible.
【简答题】The order from the commander was that the troops ______ (立即开拔去前线).
【简答题】生后第一年身高生长约:
【简答题】The commander ordered his troops stationed on the top of the hill. A B C D
【单选题】The commander of a rescue unit designated to co-ordinate search and rescue operations within a specified area is the（）.
A.
General commander
B.
Commander general
C.
Search commander
D.
On-scene commander
【单选题】The attainable production points on a production possibility curve are:
A.
the horizontal and vertical intercepts.
B.
the points along the production possibilities frontier.
C.
the points outside the area enclosed by the production possibilities frontier.
D.
the points along and inside the production possibility frontier.
【多选题】The production can be generally classified into three different kinds of production types:
A.
Single production
B.
Job production
C.
Batch production
D.
Mass production
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