Our ______ new machines are much more economical to run, compared to the old one

游客2024-02-22  6

问题 Our ______ new machines are much more economical to run, compared to the old ones.

选项 A、effective
B、efficient
C、affective
D、affectionate

答案 B

解析 题意是:比起旧机器来,我们______新机器运行起来经济多了。[B]efficient“效率高的”,符合题意。[A]effective“有效的”,[C]affective“感情的,情感的”,[D] affectionate“亲切的,挚爱的”都不符合题意。
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