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【单选题】
下列生物属于种群的是( )。A.
一块水田里的全部水稻、水草、鱼、虾及其他生物
B.
一个池塘中的全部鱼
C.
一块的全部真菌
D.
一块棉的全部幼蚜、有翅和无翅的成熟蚜
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皮皮学刷刷变学霸
举一反三
【简答题】检测轴时,卡规的通规尺寸按被测轴的 尺寸制造,而卡规的止规按被测轴的 尺寸制造。
【单选题】When does Pasha try to smile at people and thank them?
A.
When people behave kindly
B.
When people behave Impolitely
C.
When people behave indifferently
D.
When people behave cruelly
【简答题】检测轴时,卡规的通规尺寸按被测轴的 ______ 尺寸制造,而卡规的止规按被测轴的 ______ 尺寸制造。
【单选题】When a psychologist does a general experiment about the human mind, he selects people ______ and asks them questions.
A.
at random
B.
at will
C.
at length
D.
in essence
【单选题】What does the sentence ' That escalates when people gang up on an individual' in Paragraph 6 mean?
A.
People respond more quickly and badly in group action.
B.
Commentary floods when one is bullied online by others.
C.
Online information runs more smoothly when people speak in groups.
D.
Girls aged 12 to 13 are most likely to be harassed on social networks.
【简答题】规范教育学的建立的标志是____。
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