单选题Mr.Smith     &n

问题补充：

单选题Mr.SmithanimprtantpartwhenhegavethelecturelastFriday.A.left outB.picked outC.let outD.took out

答案：

A解析这题考察词组辨析：left out遗漏， picked out挑选出， let out泄漏，took out拿出，句意是：斯密斯先生上星期五做讲座时遗漏了重要的部分。选A。