A:空气中可吸入颗粒物(PM2.5)的多少不影响人体健康
B:空气是由多种物质组成的混合物
C:空气中二氧化碳的体积只占0.03%,因此它的作用很小
D:空气中氮气的质量分数为78%
根据句意及首字母提示完成单词
(1)Look! My English teacher is writing on the blackboard with c____.
(2)What will happen in the f____?
(3)Many people in Ya’an lost their l____ in the earthquake(地震).
(4)Danny has nothing to do now. He is f____.
(5)I have some q____ to ask you, Miss Black.
The centerpiece of curling(冰壶)is the curling stone. Kays of Scotland has been making curling stones since 1851, when William Kay and his sons Andrew and Thomas set up a workshop in Mauchline, Ayrshire, in southwest Scotland. Kays is still owned by the relatives of the founder, and today it is the only curling stone maker left in Scotland. Used in a highly competitive sport, the curling stones are made to exact standards. First, stones are sliced and then into round “cheeses”. Finally, the cheeses are shaped and polished into curling stones in a series of steps. Each stone must weigh 44 pounds. Each must have a maximum diameter (直径) of 36 inches. Polishing is done by hand on a wheel using water, diamond-talcum power, and felt. Finishing the stone’s “running edge” is done entirely by hand with a special kind of paper and a digital measure and magnifying glass (放大镜). Lastly, a handle(把手) is fitted into holes on the top of the stone. Stones are computer-matched into pairs. Sixteen stones----8 pairs----are needed for a game, and since curling game field usually have 6 lanes, each game field needs 96 matched stones! Kays is a small company, employing less than ten skilled workers. Master craftsman and co-owner James Wyllie is skilled at all phases of curling stone making and is also an enthusiastic curler, as well as active member of Mauchline’s Burns Club, which meets regularly to honor well-known Mauchline residents.
下图所示的路线传播的是 ( )
校园暴力,多数是以强凌弱,以大欺小,或拉帮结伙,以众欺寡。究其原因,或争风吃醋,或勒索钱物,或口角冲突,或嫉强妒能。更有甚者,校中小霸王认为“我看你不顺眼”便“给你颜色”看,横行霸道。作为一个有正义感的中学生,应该做到( )
①如果非正义的事情发生在自己身上,自己能够采用正当方式,奋起抗争
②如果看到非正义的事情发生在他人身上,能够见义勇为、匡扶正义
③能及时对受害者给予声援和救助
④及时向老师、学校和有关部门报告,维护正义