根据拼音组词。
jiān
____持
中____
____苦
____巨
____强
已知G、Q、X、Y、Z均为含氯元素的化合物,在一定条件下有下列转化关系(未配平):
①G﹣→Q+NaCl
②Q+H2OX+H2
③Y+NaOH﹣→G+Q+H2O
④Z+NaOH﹣→Q+X+H2O
这五种化合物中Cl元素化合价由低到高的顺序是( )
如图所示是关于小猫和小聪的一幅漫画,图中两条光线的夹角是60°,则小聪观察小猫光路的入射角的角度是 ____,此现象说明 ____
①用火焰灼烧自来水龙头3分钟,然后打开水龙头放水5分钟,再用无菌的三角瓶接取1000毫升水样,盖好瓶塞.
②将漏斗和抽滤瓶固定好,用镊子夹住滤膜边缘,将水样倒入漏斗中,边抽滤、边加水.
③用镊子将滤膜取出、放在无菌平板上进行培养,观察并记录实验结果.
回答下列问题:
根据句意,选用所给词的适当形式填空country twelve they west happy ____ What do you want to buy for his ____________ birthday?A toy car.____ We own the blue house while the yellow one is _______.____ To eat in a ___________ restaurant is quite different from in a Chinese one.____ China is one of the biggest _____________in the world.____ How _________ the children are singing and dancing in the classroom.