在“知必有阚余之谬而随议其后者”中，“阚”之义为（）
A.找出
B.看到
C.发现
D.耻笑
参考答案：B
To their disappointment, the couple _______ the house but couldn't find the missing ring, which was to
bring them into great trouble. [ ]
A. got through
B. went through
C. lived through
D. looked through
质量为5t的汽车，以额定功率行驶，速度由10m／s增加到最大速度20m／s，行程为3km，用时3min，设汽车行驶过程中所受阻力不变，求汽车发动机的额定功率是多少？
