题目

根据短文理解完成下列各题。 Australia is the smallest continent(洲) in the world. It is a little smaller than China. It is to the south of the equator(赤道). So when it is summer in our country, it is winter in Australia.Australia has a small population(人口). The population of Australia is nearly the same as that of Shanghai, a city in China. Australia is famous for its sheep and kangaroos(袋鼠). After a short drive from any town, you will find yourself in the middle of white sheep. Sheep are everywhere. Have you ever seen a kangaroo? It has a bag below its breast(胸). The18．实验室中测量质量的仪器叫天平，将它放在水平桌面上，游码移到零刻度后，发现指针如图所示，此时应向右移动平衡螺母，并通过观察指针是否对准分度盘的中央，判断天平横梁是否在水平位置平衡．