题目

It is illegal for a public official to ask people for gifts or money________favours to them. A．in preference to  B．in place of C．in agreement with  D．in exchange for 答案：D 考查介词短语辨析。in exchange for交换，符合题意。in preference to 偏爱；in agreement with与……一致；in place of取代。15．对下列物理量的估测，最接近实际的是（　　）A．课桌的高度大约是1.6mB．一个苹果的质量大约是1kgC．成年人步行的平均速度大约是1.1m/sD．洗澡水的温度大约是75℃