2. 外语
  3. When coal, the______ of plants, is burnt, chemical energy is changed into heat energy.

When coal, the______ of plants, is burnt, chemical energy is changed into heat energy.

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问题 When coal, the______ of plants, is burnt, chemical energy is changed into heat energy.
选项 A、remains
B、remainders
C、traces
D、remnants
答案A
解析 remains 表示“残余”、“遗迹”、“剩余物”，如：We found the remains of meal on the table．我们在桌上发现了剩下的饭菜。remainder 意为“剩余物”、“余数”，“其余(的人)”，如：I will go ahead with three of you，and the remainder can wait here．我将和你们三个向前走，剩下的人可以在这里等着。trace 意为”痕迹”、”踪迹”，如：They searched the building b
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