阅读下面选文，完成后面问题。（10分）

①计程车像饥蝗拥来。“为什么这儿有一棵树呢?”一个司机喃喃。“而且是这么老这么大的树。”乘客也喃喃。在车轮扬起的滚滚黄尘里，在一片焦躁恼怒的喇叭声里，那一片清阴不再有用处。公共汽车站搬了，搬进候车亭。水果摊搬了，搬到行人能悠闲地停住的地方。幼稚园也要搬，看何处能属于孩子。只有那树屹立不动，连一片叶也不落下。那一蓬叶子照旧绿，绿得很问题。

……

② 这天，一个喝醉了的驾驶者，以六十英里的速度，对准树干撞去。于是人死。于是交通专家宣判那树要偿命。于是这一天来了，电锯从树的踝骨咬下去，嚼碎，撒了一圈白森森的骨粉。那树仅仅在倒地时呻吟了一声。这次屠杀安排在深夜进行，为了不影响马路上的交通。夜很静，像树的祖先时代，星临万户，天象庄严，可是树没有说什么，上帝也没有。一切预定，一切先有默契，不在多言。与树为邻的一位老太太便说她听见老树叹息，一声又一声，像严重的哮喘病。伐树的工人什么也没听见，树缓缓倾斜时，他们只发现一件事：本来藏在叶底下的那盏路灯格外明亮，马路豁然开旷，像拓宽了几尺。

③ 尸体的肢解和搬运连夜完成。早晨，行人只见地上有碎叶，叶上每一平方厘米仍绿着。它果然绿着生、绿着死。缓缓的，路面染上旭辉；缓缓的，清道妇一路挥帚出现。她们戴着斗笠，包着手臂，是树的亲戚。扫到树根，她们围着年轮站定，看那一圈又一圈的风雨图，估计根有多大，能分裂成多少斤木柴。一个说，昨天早晨，她扫过这条街，树仍在，住在树干里的蚂蚁大搬家，由树根到马路对面，流成一条细细的黑河。她用作证的语气说，她从来没有见过那么多蚂蚁，那一定是一个蚂蚁国。她甚至说，有几个蚂蚁像苍蝇一般大。她一面说，一面用扫帚划出大移民的路线，汽车的轮胎几次将队伍切成数段，但秩序毫不紊乱。对着几个睁大了眼睛的同伴，她表现出乡间女子特有的丰富见闻。老树是通灵的，它预知被伐，将自己的灾祸先告诉体内的寄生虫。于是弱小而坚忍的民族，决定远征，一如当初它们远征而来。每一个黑斗士在离巢后，先在树干上绕行一周，表示了依依不舍。这是那个乡下来的清道妇说的。这就是落幕了，它们来参加树的葬礼。

④两星期后，根也被挖走了，为了割下这颗生满虬须的大头颅，刽子手贴近它做了个陷阱，切断所有的动脉静脉。时间仍然是在夜间，这一夜无星无月，黑得像一块仙草冰。他们带利斧和美制的十字镐来，带工作灯来，人造的强光把举镐挥斧的影子投射在路面上、在公寓二楼的窗帘上，跳跃奔腾如巨无霸。汗水超过了预算数，有人怀疑已死未朽之木还能顽抗。在陷阱未填平之前，车辆改道，几个以违规为乐的摩托车骑士跌进去，抬进医院。不过这一切都过去了。现在，日月光华，周道如砥，已无人知道有过这么一棵树，更没有人知道几千条断根压在一层石子一层沥青又一层柏油下闷死。

小题1:细读第①段，你对那树“绿得很问题”是怎么理解的？（2分）

小题2:请你分别指出第②④段中景物描写的作用（2分）

小题3:第③段中，作者讲述的蚂蚁国的故事有什么用意？（2分）

小题4:赏析下列句子的妙处（4分）

①电锯从树的踝骨咬下去，嚼碎，撒了一圈白森森的骨粉。

②现在，日月光华，周道如砥，已无人知道有过这么一棵树。

World Health Organization (WHO) officials recently urged Asia-Pacific governments to shake off complacency and intensify the fight against tuberculosis (TB), which kills 1,000 people a day in the region. Shigeru Omi, regional director of WHO for the Western Pacific, said deaths caused by tuberculosis continue to rise in the region as ’more and more people are infected with the dreadful disease every year.
"Every year, an additional two million tuberculosis cases are diagnosed in the region," Omi said at a news conference during the opening of a two-day meeting of Asian’ parliamentarians to discuss strategies to control the disease. (41) "When it comes to developed countries, the reason for the increase of TB is related to the ageing society," he said." (42) ""One common fact among developing countries and developed countries is complacency, "Omi added." (43) "
WHO said among the "high burden, high risk" countries in the region are Cambodis, China, Laos, Mongolia, Papua New Guinea, the Philippines and Vietnam. (44) It noted that more that 40 million people are infected with the disease and "10 percent of them -will develop TB in their lifetime. "In Cambodia, more than 7 million people, or 60 percent of the population, are infected with the disease, while in Vietnam more than 145, 000 people are infected each year. "In several developed and newly industrialized countries in the Western Pacific region, TB prevalence has not decreased markedly during the last decade although economic growth should make more resources available to deal with the problem, "WHO said. (45) .
Omi expressed confidence that with renewed vigilance among health officials in the region. TB prevalence could be reduced by half by 2010.
[A] If you become elderly, your immune system is becoming weaker and weaker.
[B] In Japan, the number of diagnosed cases rose to 48, 264 in 1999 from 42, 472 cases in 1996.
[C] Omi pointed out that the main factor for the rise of TB cases in developing countries is the rapid increase of people who migrate into the big cities and live in unsanitary conditions.
[D] There is no doubt that tuberculosis will be eliminated completely everywhere in the world in the near future.
[E] They thought we have already conquered tuberculosis, so they become a little bit complacent.
[F] WHO records showed that in China, tuberculosis is one of the most common causes of death.
[G] In Asia, the number of diagnosed cases rose to 148, 264 in 2001 from 42, 472 cases in 2005.