五、任务型阅读。
阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。
主题群:自然生态 子主题:植物科普 语篇类型:说明文 难度:★★
Bamboo is a wonderful plant for many people around the world. 1. People make tables, clothes, medicine, and musical instruments with it. Pandas mainly eat bamboo every day, and people can also eat it.
2. Some bamboo grows so quickly that people say they can watch it grow. The speed of growth depends on the type of bamboo, the earth and the season. Normal bamboo grows 3~10 cm a day. It usually grows in tropical(热带的) areas. 3. Bamboo plants are found in Asia, parts of Africa, and South America.
One of the world's oldest building materials is bamboo. Today, people use it because it's very strong. In the past, they used it to build houses, boats, and bridges. The Chinese made a bamboo bridge over the Min River in Sichuan, China almost 1,000 years ago. 4. Also, bamboo is still used to make houses today, especially in China and the Philippines.
As a part of history, bamboo is very important. The great scientist Thomas Edison did not invent the light bulb(灯泡), but he made it perfect. He wanted the material inside to burn for a long period of time. He tried over 1,000 different types of materials. 5. One day, he tried to use a piece of bamboo and the light bulb lit up for over a thousand hours. This invention helped other scientists to make the modern light bulb we use today.
A. You can still visit it today.
B. There are over 1,000 uses for it.
C. However, none worked very well.
D. Bamboo is light because it is empty inside.
E. It can also be found in other parts of the world.
F. Chinese people like drawing pictures of bamboo.
G. The fastest growing plant in the world is bamboo.

1. B 空后两句说明竹子可用来制作桌子、衣服、药品、乐器,还能被人和熊猫食用,是对竹子用途的具体说明。B选项起到总起作用,引出下文的具体举例,逻辑连贯。
2. G 空后提到“有些竹子长得非常快,人们说能看见它生长”,并介绍了竹子的生长速度、影响因素等,都是围绕竹子的生长速度展开的。G选项直接点明本段核心话题,符合语境。
3. E 空前说竹子通常生长在热带地区,空后介绍亚洲、非洲部分地区和南美洲都有竹子分布,是对竹子生长范围的补充说明。E选项起到过渡作用,衔接前后内容。
4. A 空前提到中国人在近1000年前于四川岷江建造了一座竹桥,A选项承接上文,进一步说明这座竹桥的留存情况,符合上下文对竹子作为建筑材料的介绍。
5. C 空前说 Edison 尝试了1000多种材料来完善灯泡,空后说他用竹子尝试后,灯泡亮了超过1000小时。C选项承接前文的多次尝试,又通过转折引出后文竹子的成功应用,逻辑通顺。

【分析】
做这类任务型阅读（七选五）题，需先通读全文把握每段核心话题，再结合空格前后语境分析句子间的逻辑关系（如总起、过渡、承接、转折等），逐一匹配选项。本题围绕竹子的用途、生长、建筑应用、历史价值展开，需对应空格前后的内容选择衔接恰当的选项。
【解析】
1. 第1空：空后列举了竹子制作物品、供人及熊猫食用等多种用途，B选项“它有超过1000种用途”总领下文的具体举例，逻辑连贯，故选B。
2. 第2空：空后围绕竹子生长速度快展开，提到“有些竹子长得非常快”等内容，G选项“世界上生长最快的植物是竹子”点明本段核心话题，故选G。
3. 第3空：空前说明竹子通常生长在热带地区，空后介绍亚洲、非洲部分地区、南美洲的分布，E选项“它也能在世界其他地区被发现”起到过渡作用，衔接前后分布内容，故选E。
4. 第4空：空前提到中国近1000年前在岷江建了竹桥，A选项“你现在仍然可以参观它”承接上文，说明竹桥的留存情况，符合语境，故选A。
5. 第5空：空前说爱迪生尝试1000多种材料，空后说用竹子成功，C选项“然而，没有一种效果很好”承接前文的多次尝试，又通过转折引出后文竹子的成功应用，逻辑通顺，故选C。
【答案】
1.B 2.G 3.E 4.A 5.C
【知识点】
任务型阅读（七选五）、说明文语篇衔接
【点评】
本题是自然生态主题的说明文类任务型阅读，主要考查学生对语篇逻辑、上下文衔接的理解能力，需把握段落主旨和句子间的逻辑关系，难度适中，适合中等水平学生练习。
【难度系数】
0.6