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【单选题】
One reason that might explain Page's sleeplessness was______.A.
his mother's injured before he was born
B.
that he had gradually got rid of the sleeping habit
C.
his magnificent physical condition
D.
that he hadn't got a bed
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【简答题】通常情况下，婴儿添加辅助食品的时间是()个月。 (A)2～4 (B)3～5 (C)4～6 (D)6～8
【单选题】周周今年4岁了，父母平时忙于工作。与周周的交流不多。近来父母发现周周比同龄孩子说话的流利程度、词汇量、表达能力都要差很多。去医院检查，医生说周周的智力发展没有问题，父母又来向社会工作者咨询。根据以上信息，社会工作者可以估计最可能出现问题的环节是（ ）。
A.
大脑生理发育不够成熟
B.
发声器官成熟度不够
C.
遗传的性格特征所致
D.
父母提供的语言互动学习机会太少
【简答题】假设某电阻的测量值为 0.996k Ω,修正值为 0.002k Ω,则对应的绝对误差和实际值各是多少? 要求:作业要上抄题,写出过程,拍照上传。
【单选题】---Excuse me, when you the girl over there? ---Last year in Beijing. And I her for about one year.
A.
have known; have known
B.
did know; knew
C.
did know; have known
D.
have known; knew
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