【单选题】I bought a used Longman Dictionary yesterday. It ____ me only twenty yuan.
【单选题】I bought some CDs for my friend and they _____ me ¥30. [ ]
【单选题】I bought some CDs for my friend and they ______me 30 yuan. [ ]
【单选题】I bought some CDs for my friends and they _____ me 30 dollars.
【判断题】KMnO 4 标准溶液液可以采用直接法配制。
【判断题】配制KMnO 4 标准溶液可以采用直接法。
【判断题】重油梯级分离技术中通过造粒系统将脱油沥青转化为沥青颗粒,其目的之一是增强沥青的储存运输性能
【判断题】双重重力模型认为不是每个媒介都有传递象征意义的能力。( )
【单选题】The used car I bought cost four _____ pounds.