题目

跟热机相比，电动机具有、停止方便、构造、体积小、效率高、对环境污染等优点． 答案：【1】启动（开动）【2】简单【3】少-The fellow has been suspected ________ an email fraud.-Nowadays cybercrime is developing ________ an amazing rate. [     ]A．from; at  B．about; inC．of; with  D．of; at