题目

Chester felt more tired than usual after a hard day at the office. Young and successful, he was a1 ． [‘maenidʒə(r)] in one of 2． biggest companies in Singapore. Chester hated it when he3 ．（犯错） . But today he showed a wrong PPT at the meeting. Seeing this, everyone sat4 ．（沉默；无声） . Even worse, he forgot to t5 ． notes during the meeting. He didn’t like having to6 ．（熬夜） to prepare things for the next day. Today, he had to. Then Chester finally finished his w7 ． . He f8 ． tired. He decided to walk home 9．（代替；而不是） taking a ta某四棱锥的三视图如图所示，其中正（主）视图是等腰直角三角形，侧（左）视图是等腰三角形，俯视图是正方形，则该四棱锥的体积是（　　） A、8B、83C、4D、43