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【单选题】
保持居室通风透气，主要是为了预防( )A.
呼吸道传染病
B.
消化道传染病
C.
高血压
D.
鼠疫
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反馈参考答案：
举一反三
【简答题】Picking her up in my arms like a child, I turn her on her side.
【单选题】下列溶液的浓度均为0.1mol·L-1，已知【图片】，下列pH最大的是 。
A.
NaHCO3
B.
(NH4)2CO3
C.
Na 3 PO 4
D.
Na 2 CO 3
【单选题】Why do you think Doree gives up life with her mother’s friend and marries Lloyd instead?
A.
She needs someone to take care of her
B.
She does not want to be dependent on her mother’s friend
C.
She looks for a fatherly figure in marriage because she grows up in a single-parent family
D.
She wants to start her own family independently
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