题干

当溶液中XO42 和SO32的离子数目之比为1∶2时,恰好完全反应,则X元素在还原产物中的化合价为(    )

A:+1

B:+2

C:+3

D:+4

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答案(点此获取答案解析)

B

同类题3

阅读文段,回答问题。

我的父亲丰子恺《节选》

    我的父亲丰子恺,平日作画,喜欢从人们的日常生活中取材。记得抗战前在故乡时,他曾画过一个人牵着几只羊,每只羊的颈上都系着一根绳子。画好了挂在墙上,正好被帮我家挑水的青年农民看到了。他笑着说:“牵羊的时候,不论几只,只要用一根绳子系住带头的那一只,其余的都跟上来了。”父亲听了恍然大悟,同时想起了杜处士的故事。他重画了一张之后就把那故事讲给我们听。他说从前有个杜处士,珍藏着一幅《斗牛图》,是唐朝名画家戴嵩的作品。有一天他把画拿出来挂在门上晒,一个过路的牧童看到了,说“画错了!画错了!”杜处士听了心里想,一个乡下小儿竞敢批评起名画家来了,这还了得,便很不以为然地问错在哪里。那牧童说,两牛相斗,牛最用力的是两只角,尾巴总是紧紧地夹在两股中间的;画上的两只牛,尾巴都翘了起来,这不是画错了吗?父亲在结束故事时感慨地说:“看来要画好画,不能光凭想象,必须仔细观察事物,还应该多向各种各样的人请教。”父亲说到做到。有一次为了画一幅背纤图,他率先特地到河边去进行实地观察,发现来往货船走在最前面的纤夫大多是倒走的,经过了解,才知道倒走能够掌握航船的动向,可以随时通知其他的纤夫改变纤法。他便按观察所得画了这幅《背纤图》。

同类题5

阅读理解。

Soap operas from South Korea have been popular in China for more than twenty years now. So it is not the first time for the soap operas made in China to feel less popular. But this time, they are facing more difficulties, for The Heirs (继承者) and My Love from the Star (来自星星的你) really made a full success, which even attracted some top officials.

A senior official said he sometimes watched soap operas from South Korea, as well as House of Cards (纸牌屋), an American opera about politics (政治). These operas made both in South Korea and in America have a lot of lovers in China.

Many people agree that China's soap operas can't be much loved by most Chinese, because they are not as interesting and exciting as those operas from South Korea and America, such as My Love from the Star, a Korean love story between a time traveling professor and a famous movie star.

    However,Korean shows not only provide soap operas but also some programmings (综艺节目). Dad, Where Are We Going? is not an original (独创的)Chinese show. We learned it from South Korea although not many in China realize that fact.

Actually, China has a closer culture with South Korea. Shows from this neighbor seem to do better with their exciting stories on the Cinderella theme (灰姑娘主题). Yet they have created many popular shows whose stories tell there's no difference between men and women even though in their country men are certain to play a more important role.