题目

从方框中选出合适的单词，并用其正确形式填空active, interest, study, danger, member【小题1】They like climbing. They are all _______ of the Climbing Club.【小题2】One of his jobs is _______ all kinds of the birds in the forest.【小题3】Everyone should _______ take action to make the world peaceful.【小题4】A tiger is _______ when it is hungry.【小题5】We like science very much because our teacher can always make the lessons _______. 关于质点，下列说法正确的是 A．质点一定是小物体 B．平抛运动的物体不可以看成是质点 C．研究地球自转时，可以把地球看成是质点 D．研究地球绕太阳公转时，可以把地球看成是质点