题目

用所给动词的适当形式填空【小题1】Look out! The bus _______ (come).【小题2】?Where are you _______ (go)??I will _______ (go) _______ (birdwatch).【小题3】That is a good place _______ (walk) the dog.【小题4】Would you like _______ (watch) the birds in the forest?【小题5】The swallow _______ (fly) to northern countries in summer. 答案：【答案】【小题1】is coining【小题2】goinggo birdwatching【小题3】to walk 【小题4】to watch 【小题5】flies【解析】【小题1】Look out! 留神!用于提醒。根据句意和英文提示，可知填is coining。【小题2】will将要，用于一般将来时；go birdwatching去观鸟。根据句意和英文提示，可知填(1)going (2)go (3)birdwatching。【小题3】一气球以V（m/s）的速度由地面上升，10分钟后由观察点P测得气球在P的正东方向S处，仰角为45°；再过10分钟后，测得气球在P的东偏北30°方向T处，其仰角为60°（如图，其中Q、R分别为气球在S、T处时的正投影）．求风向和风速（风速用V表示）．