考纲规定的考试范围:
重点单词与短语sailor;benefit;disadvantage;entertainment;medium;relatively;solid;available;pure;dense;relationship;mass;volume;float;absorb;release;stable;sensitive;bottom
重点单词与短语sailor;benefit;disadvantage;entertainment;medium;relatively;solid;available;pure;dense;relationship;mass;volume;float;absorb;release;stable;sensitive;bottom