The new car won’t go into production soon. The engine of it hasn’t been fully .
A. carried out
B. worked out
C. tested out
D. put out
网友回答
A. carried out
B. worked out
(答案→)C. tested out
D. put out
解析：考察动词短语辨析。A执行；B锻炼，经计算出，制定出；C测试，监测；D扑灭，生产，出版；句意：这种新车还没有投入生产，它的发动机还没有完全通过监测。根据句意说明C项正确。