【单选题】What causes wind on top of hills and mountains?
A.
cool air rising while hot air sinks
B.
cool air and hot air hitting each other
C.
hot air rising while cool air sinks
D.
cool air and rain clouds
【简答题】A.lake B.river C.mountains D.hills
【单选题】They have to walk_________8 country parks and___________20 hills and mountains. [ ]
【判断题】出去做其他事情的时候,可以将手机、笔记本电脑等放在教室充电。
【简答题】Postcards to myself In 50 years fo traveling Colin McCorpuodale has visited every country in the world, except thtee, And everywhere he goes, he sends himself a postcard , He always chooses a postcard...
【简答题】[A]lake [ B] river [C] mountains [D] hills
【简答题】China's topography is varied and complicated, with towering mountains, basins of different sizes, undulating plateaus and hills, and flat, fertile ___________ .
【单选题】The highland zone is an area of high hills and mountains in the______of Britain.
【单选题】—Oxfam trailwalkers in Hong Kong have to climb________ twenty hills and mountains. —It’s really a tough hike.