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【多选题】
下列关于人类语言的说法正确的有( )A.
人类的意识对语言的反射属于第二信号系统
B.
语言与现实客观世界是形式与内容的关系
C.
人类对语言的反射属于感性认识活动
D.
语言是思维的物质外壳
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反馈参考答案：
举一反三
【单选题】The burning of the fuel adds more heat to the air charge, causing it to expand and force the engine piston to do work on the crankshaftWhat does “it” mean in this sentence?
A.
the burning
B.
the fuel
C.
the air charge
D.
the engine piston
【简答题】Heat causes the (expand) of gases.
【单选题】— How long do you want me to heat the oil? — Heat it till it _____ to smoke. [ ]
A.
would begin
B.
begins
C.
will begin
D.
began
【简答题】Metals expand with heat and contract with cold. contract:
【单选题】All gases and most liquids and solids expand when heated, but they do not expand equally.
A.
simultaneously
B.
randomly
C.
accurately
D.
uniformly
【单选题】The ideal piston material would not ______. light and strong, conduct heat well, expand only slight when heated, resist wear, and be low in cost.
A.
be light and strong
B.
conduct heat well
C.
expand only slight when heated
D.
be high in cost
【单选题】All gases and most liquids and solids expand when ______ .
A.
heated
B.
heating
C.
being heating
D.
heat
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