现代篮球运动传入中国后其普及、发展、提高可分为哪三个阶段和七个时期？为什么这样划分？

化学就在我们身边。

(1)全面、均衡和适量的从食物中摄取营养物质，是人体健康的基本保证。下到食物中富含糖类的是_____。A.鸡蛋 B.米饭 C.黄瓜 D.菜籽油

(2)铁制品的锈蚀过程，主要是铁与空气中的氧气和水蒸气等发生反应。故生活中防止铁制品生锈的方法有_________(写一种)。除铁锈(主要成分是Fe₂O₃)的方法也很多，如用稀盐酸除铁锈，反应的化学方程式为______________。

(3)“尾气催化转化器”可将汽车尾气中的有毒气体转化为无毒气体，下图为反应的微观示意图。A物质中氮元素与氧元素的质量比为___________。该反应的化学方程式为__________________。

下列各项中不符合肺心病体征的是（）

A.颈静脉怒张

B.肝颈静脉逆流征阳性

C.心脏浊音界向左下扩大

D.剑突下示心脏搏动

E.肺动脉瓣区第二心音亢进

Many people think teachers give pupils too __1__ homework. They say that it is __2__  (necessary) for children to work at home in their free time. __3__, they argue that most teachers do not properly plan the homework tasks they give to pupils. The results are __4__ pupils have to repeat tasks which they have already done at school.

Recently in Greece many parents complained about the difficult homework __5__ (give) to their children. The parents said that most of the homework was useless, and they wanted to stop it. Spain and Turkey are two countries which __6__ (stop) homework recently. In Denmark, Germany and several other countries in Europe, teachers cannot set homework at weekends. In Holland, teachers allow pupils to stay at school to do their homework. The children are free to help one __7__. Similar arrangement also exists in some British schools.

Most people agree that homework is not fair. A pupil who can do his homework in a quiet and comfortable room is in a much __8__ (good) position than a pupil who does his homework in a small, noisy room with the television __9__. Some parents are ready to help their children with their homework. But other parents even take __10__ interest at all in their children’s homework

男性，60岁。间断发热1个月，最高体温38度，伴关节痛、腹痛、双下肢皮疹，2周前出现双下肢水肿，伴恶心、呕吐、胸闷。化验：血：WBC12000／mm³，HB75g／L；尿Pro（+++）RBC许多／HP；生化：Cr560μmol／L，ALB30g／L；P-ANCA（+）ANA（-）（）

A.结节性多动脉炎

B.显微镜下多血管炎

C.韦格内肉芽肿

D.过敏性紫癜性肾炎

E.狼疮性肾炎

李某开车撞伤丁某，伤势很重。过路人方某送丁某到医院治疗，到医院后，护士王某因打错针而使丁某死亡。此案中丁某死亡的原因是( )。

A．李某撞伤的行为

B．方某的过错

C．李某、方某、王某的行为

D．王某的过错