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【简答题】
数据库文件按记录中关键字的多少可分成【】和【】两种文件。
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皮皮学刷刷变学霸
举一反三
【简答题】植物保护的工作方针是 , 。
【单选题】D Science can't explain the power of pets, but many studies have shown that the company of pets can help lower blood pressure (血压) and raise chances of recovering from a heart attack, reduce lonelines...
A.
What pets bring to their owners.
B.
How pets help people calm down.
C.
People's opinions of keeping pets.
D.
Pet's value in medical research.
【单选题】Which of the following can't be used to recommend others to keep pets?
A.
I advise you to keep pets
B.
Keeping pets is highly recommended
C.
If you like animals, I suggest you keep pets
D.
Raising pets is not allowed in my family
【简答题】布鲁纳的“发现法”具有两个效用：一是给心灵带来愉快，二是促使能力获得 。
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