the house on fire, he dialed 119. A To see B Seeing C Having seen D Being seen 答案 Seeing 5、Mark often attempts to escape whenever he breaks traffic regulations. A having been fined B to have been fined C to be fined D being fined 答案 being fined 6、It is our purpose in this section to introduce the basic meaning of the solution of a differential equation. 下划线部分在句中做 。 A 主语 B 宾语 C 状语 D 定语 答案 这种现象非常少以至于在现实生活中经常被忽视。 7、与电压源相连的灯形成一个简单的电路。A lampto a voltage source forms a simple circuit. A connect B connected C to connect D connecting 答案 connected