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【单选题】
下列关于原子的叙述正确的是（ ）A.
物质原子构成的
B.
原子是由质子和电子构成的
C.
原子是由质子和中子构成的
D.
原子是由原子核和核外电子构成的
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举一反三
【单选题】In terms of health condition, we must not forget that health ______is brought about not by doctors but by patients themselves.
A.
discovery
B.
treatment
C.
recovery
D.
prescription
【多选题】依赖性药物的特征为(多选)
A.
绝大部分依赖性药物同时兼有精神依赖性和身体依赖性
B.
一般反复用药进程中，先产生精神依赖性，后产生身体依赖性
C.
少数药物只产生精神依赖性而无身体依赖性
D.
精神依赖性是造成滥用者不断追求用药的最主要因素
E.
同时产生身体和精神依赖性的药物，均为中枢神经系统兴奋剂
【简答题】Listening 1 (unit 1) Mike: Hey, Lynn, how was your weekend? Lynn: It was great! I went cycling around the ______ last Saturday, with several cycling club ________. We started at our school gate and ro...
【简答题】Mike: Hey, Lynn . ________1________ Lynn: It was great! I went cycling around the city last Saturday, with several cycling club members. We started at our school gate and rode by Dongfeng Bridge in th...
【单选题】In terms of health condition, we must not forget that health ____ is brought about not by doctors but by patients themselves.
A.
consistency
B.
accuracy
C.
efficient
D.
recovery
【简答题】Mike: Hey, Lynn . ________1________ Lynn: It was great! I went cycling around the city last Saturday, with several cycling club members. We started at our school gate and rode by Dongfeng Bridge in th...
【单选题】以下的语句正确的是()。
A.
对于一辆汽车来说，所用汽油辛烷值越高越好
B.
如果制动液中混入了其它的制动液，其沸点会升高
C.
车辆中液体用以完成动力传输，液压控制和润滑等功能
D.
在车辆发动机中使用黏度和发动机机油一样的齿轮油不会有问题
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