【简答题】词形变换:The machine suddenly stopped ________(work) because of the power out.
【判断题】光滑斜面上的物体,是在重力和下滑力的共同作用下沿斜面加速滑动的
【简答题】词形变换。 1. invite (名词) _____ 2. let us (缩写) _____ 3. play ground (合为一词) _____ 4. match (复数) _____ 5. swim (ing形式) _____ 6. go (反义词) _____
【简答题】当声波振动鼓膜时,三块听小骨的连串运动,震动( )将声波的振动传入内耳
【简答题】词形变换,用所给单词的适当形式填空。 1. In western country Sunday is the ___________(one) day of the week. 2. A lot of ___________ (visit) visited the Great Wall last year. 3. Tom decided ___________ (not be) late for ...