【单选题】--I’ve got a headache again! ---Sorry to hear that. Walk to work every day and you’ll soon back in ______.
【判断题】当操作“车窗锁止”功能后,除驾驶员车窗外,所有车窗玻璃升降功能失效。
【简答题】边际报酬递减规律成立的原因是:可变要素和固定要素间有一个最佳比例关系。( )
【判断题】边际报酬递减规律成立的原因是:可变要素和固定要素间有一个最佳比例关系
【单选题】-What do you think of the four classics (名著)of China? -I hear that they are wonderful, but I’ve read _______ of them.