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【简答题】
Complete the sentences with words from Exercise A. commute上下班往返;通勤 direction方位;方向 downtown 向市中心;往闹市区 favor恩惠;赞赏的行为 intersection 道路交叉口;交点 pollution 污染 traffic 交通 transportation交通运输;污染 1. Sorry, I’m going to be late. The ________ is really bad today. It must be rush hour. 2. I want to go ________ and do some shopping. All the best shops are there. 3. Emily will meet me at the ________ of Oak and Elm Street. 4. Could you please give me ________ to Hyde Park? I’m lost. 5. Jenny always uses public ________. She doesn’t know how to drive. 6. Can I ask you a(n) ________? I need help moving house. 7. It takes two hours for Kevin to ________ here every day. No wonder he is often late. 8. One thing I don’t like about the big city is the dirty air. The ________ is terrible.
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举一反三
【单选题】下面说法有误的是( )。
A.
传统燃油汽车交流发电机利用发动机的旋转发电,发出的电提供给用电器并为蓄电池充电。
B.
纯电动汽车以动力电池为电源,能够利用AC-AC转换器为低压蓄电池充电,从而可以省去原来的交流发电机。
C.
纯电动汽车的电源分为主电源和辅助电源。
D.
纯电动汽车的辅助电源(低压的铅酸蓄电池)是指车载各种仪表、控制系统提供的直流低压电源。
【简答题】辅助动力源是指()V的直流电压电源。
【简答题】辅助动力源是指()直流电压电源