单项选择题
Physics is a science dealing with sound, light, heat, electricity, magnetism (磁性), the properties of matter and what it is composed of.
A.物理学是一门研究声、光、热、电、磁、物质性质和物质组成的科学。
B.物理学领域包括声、光、热、电、磁、物质性质和物质组成的科学。
C.物理学是专门研究声、光、热、电、磁、物质性质和物质组成的科学。
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单项选择题
Now I must work twice as hard to catch up with others.
A.我现在必须花两倍的时间,为的是赶上别人。
B.我现在必须加倍努力,与别人保持同步。
C.我现在必须加倍努力才能超过别人。
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