如图是用燃磷法测定“空气中氧气含量”的实验,下列说法正确的是( ) A.装置中的红磷可以用铁丝来代替 B.待红磷熄灭并冷却后,打开弹
下列关于各地农作物耕作制度的叙述正确的是 A.珠江三角洲为一年一熟 B.三江平原为一年两熟 C.江汉平原为两年三熟 D.海南岛为一
Many lifestyle patterns do such ________great harm to health that they actually speed up ________weakening of the human body. A.a; / B./; the C.a; the D./; /
2011年3月,全国两会在京举行。代表委员和人大代表来自各个民族、各条战线,既有德高望重、经验丰富的老代表,也有朝气蓬勃、初展头角的年轻人。
Alice trusts you, only you can _________ her to give up the foolish idea A. try B. attract C. tempt D. persuade
Similarly,only by means of examinations________the level of their students. A.teachers can understand B.teachers understand C.can teachers understand D.teachers do understand
日本明治维新和中国戊戌变法是亚洲近代化历程中接踵发生的两大事件。结合所学知识回答问题。 (1)1868年4月6日,日本明治天皇率领群臣在皇宫紫宸