There a series of car accidents at the crossing. A.were B.are C.have D.has been
以下四个结论中,可作为l1∥l2的一个充分条件的有_______________个.①l1、l2都平行于同一平面 ②l1、l2与同一平面所成角相等 ③l1平行于l2所在平面 ④l1
下列词语中加点的字的读音,不正确的一项是( ) A.剥开(bāo) 对峙(zhì) 惟妙惟肖(xiào) B.玷污(diàn) 颈椎(jǐnɡ) 含辛茹苦(rú) C.踌躇(chú) 埋怨(m
When six the very best students from different cities in Guandong province all together chose universities in Hong Kong; when the very best student of Beijing picked up HK University while giving up t
在汉语中有一类以物喻人的词语,它们的运用可以使语言更加形象生动,请从“牛马”“笑面虎”“纸老虎”“领头雁”四个词语中任选两个,仿照示
化学与生活息息相关,我们的衣食住行、工业生产都离不开化学。 (1)为改良酸性土壤,可向土壤中施加适量的____(用化学符号填空,下同),
--- Is there any possibility ________ we can get a ticket for The 2010 Shanghai World Expo? --- Of course, yes. You can either go to the Expo in person or buy ________ through the Internet. A. whi
(4分)可逆反应:aA(g)+ bB(g)cC(g)+ dD(g);根据图回答:(1)压强 P1比P2 (填大或小);(2)(a +b)比(c +d) (填大