五、阅读与回答问题
Many cities are welcoming wildlife. Some let grass grow wild. Others save space for animals to live in. A newspaper listed its 10 most exciting and creative urban biodiversity projects. Let's take a look at three of them.
Vertical forests in Milan
Wild vertical forests grow in the central business district of Milan, Italy. Two tall buildings are covered with green plants. They provide the same amount of vegetation(植被)as 30,000 square metres of woodland, according to Italian architect(建筑师)Stefano Boeri.
The Bosco Verticale Project opened in 2014. It includes two buildings—one is 110 metres tall, while the other is 76 metres. Eight hundred trees, 15,000 ground - cover plants and 5,000 shrubs(灌木)are planted in big tubs(盆)on large balconies. They attract 1,600 species of birds and butterflies according to Boeri. To make sure the plants don't affect the view of people, they are trimmed(修剪)often.
Living with caracals(狞猫)in Cape Town
Caracals are good at hiding. They are rarely seen but live in many nature reserves, gardens and vineyards(葡萄园)in Cape Town, South Africa. They are the last large predators on the Cape Peninsula. However, they live in danger. Car accidents cause around 70% of their deaths, making it the main danger to them.
Local people started the Urban Caracal Project to protect them. They catch and mark the cats. They also put radio collars(无线电项圈)on the cats to find out where they go. This way, people can learn road - kill hotspots(高发地). They invite an artist to create artworks and put them on these hotspots to remind people to drive slowly. There are also caracal road signs. They have received a lot of attention around the city.
Wildlife bridges in Edmonton
More than 10 wildlife bridges and passages(通道)have been built in Edmonton, Canada. One of the largest is a 30 - metre - long bridge near Big Lake in the north - west of the city. It is made to be a corridor(走廊)for moose(驼鹿)and other animals. Trees on the bridge give shelter to animals as they pass. There are smaller bridges including special passes for salamanders(蝾螈)and frogs. With the help of these bridges, they don't have to cross roads as they move between the wetlands and forests.
There are similar passages all over the world. A wildlife corridor, the biggest in the world, is planned to extend over Highway 101 in Los Angeles, USA. It aims to protect mountain lions. Along the Qinghai - Xizang Railway in China, there are special bridges and passages made for yaks(牦牛), Tibetan antelopes(藏羚羊), and other animals to cross.
1. Why are some plants trimmed often?
2. What is the main cause of deaths for caracals?
3. What can radio collars on caracals do?
4. Why were wildlife bridges built in Edmonton?
5. Please translate the underlined sentences into Chinese.

1. To make sure the plants don't affect the view of people.
2. Car accidents.
3. They can help find out where the caracals go.
4. To help animals move between wetlands and forests without crossing roads.
5. 世界上最大的野生动物走廊计划延伸至美国洛杉矶的101号高速公路上方。

翻译:
五、阅读与回答问题
许多城市正在欢迎野生动物。一些城市任由草肆意生长。另一些城市则为动物留出栖息空间。一家报纸列出了其10个最令人兴奋且富有创意的城市生物多样性项目。让我们来看看其中的三个。
米兰的垂直森林
野生垂直森林生长在意大利米兰的中央商务区。两栋高楼被绿色植物覆盖。据意大利建筑师斯特凡诺·博埃里称，它们提供的植被量相当于30000平方米的林地。
“垂直森林”项目于2014年开放。它包括两栋建筑——一栋高110米，另一栋高76米。800棵树、15000株地被植物和5000株灌木被种植在大阳台的大盆里。据博埃里称，它们吸引了1600种鸟类和蝴蝶。为了确保这些植物不影响人们的视野，它们经常被修剪。
在开普敦与狞猫共存
狞猫善于隐藏。它们很少被看到，但生活在南非开普敦的许多自然保护区、花园和葡萄园里。它们是开普半岛上最后的大型食肉动物。然而，它们生活在危险之中。车祸导致了它们约70%的死亡，这成为了它们面临的主要危险。
当地居民启动了“城市狞猫”项目来保护它们。他们捕捉并标记这些猫。他们还在猫身上安装无线电项圈，以了解它们的去向。通过这种方式，人们可以了解到动物被车撞死的高发地。他们邀请了一位艺术家创作艺术品，并将其放置在这些高发地，以提醒人们减速驾驶。还有狞猫的路标。它们在城市周围受到了很多关注。
埃德蒙顿的野生动物桥
加拿大埃德蒙顿已经建造了10多座野生动物桥和通道。其中最大的一座是位于城市西北部大湖附近的一座30米长的桥。它被建造成驼鹿和其他动物的走廊。桥上的树木为经过的动物提供了庇护。还有较小的桥，包括为蝾螈和青蛙设置的特殊通道。在这些桥的帮助下，它们在湿地和森林之间移动时不必穿过马路。
世界各地都有类似的通道。美国洛杉矶计划在101号高速公路上延伸一条世界上最大的野生动物走廊。它的目的是保护美洲狮。在中国的青藏铁路沿线，有专门为牦牛、藏羚羊和其他动物建造的桥和通道，方便它们穿越。
1. 为什么一些植物经常被修剪？
2. 狞猫死亡的主要原因是什么？
3. 狞猫身上的无线电项圈能做什么？
4. 为什么在埃德蒙顿建造野生动物桥？
5. 请将划线句子翻译成中文。