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【单选题】
According to the passage, which of the following is true?A.
It is very difficult for the middle-aged to live in America.
B.
America is Kids Country because the majority of the American population is children.
C.
Kids Country was taking shape in America when immigrants poured into the country.
D.
America is more of Kids Country than any other countries in the world.
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举一反三
【单选题】某药物的服用方法是每次25mg/kg,3次/日。体重8kg的小儿每天应用药的总量为
A.
150mg
B.
200mg
C.
400mg
D.
600mg
E.
800mg
【简答题】对双链 DNA 而言,1 若一条链中 (A + G)/(T + C)= 0.7 ,则互补链中和整个 DNA 分子中 (A+G)/(T+C) 分别等于多少? 2 若一条链中 (A + T)/(G + C)= 0.7 ,则互补链中和整个 DNA 分子中 (A + T)/(G + C) 分别等于多少?
【单选题】某药物的服用方法是每次25mg/kg，3次/日。体重8kg的小儿每天应用药总量为：
A.
150mg
B.
200mg
C.
300mg
D.
600mg
E.
800mg
【简答题】女,20岁,发热 2 个月,近一周来两面颊出现对称性红斑,手指关节红肿,化验:血红蛋白 90g/L,白细胞 3.0x109/L,尿蛋白(+++),抗 dsDNA 抗体阳性,该患者首先考虑的诊断是()A. 风湿热 B. 慢性肾炎C.类 C. 风湿关节炎 D. 系统性红斑狼疮 E. 缺铁性贫血
【单选题】mp3:
A.
He got a new job.
B.
He was ill.
C.
He had a car accident.
D.
He was on holiday.
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