A. It is something people all engage in. B. It helps people acquire knowledge.
A. It is something people all engage in.
B. It helps people acquire knowledge.
C. It starts soon after we are born.
D. It is the source of all artistic work.
A. sensitive B. superiorC. exclusive D. efficient
A. sensitive
B. superior
C. exclusive
D. efficient
A. Besides B. ThereforeC. Moreover D. However
A. Besides
B. Therefore
C. Moreover
D. However
为什么屋内配电装置的母线要涂漆，而屋外配电装置的母线则不涂漆？
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