由于人类活动 地球上的树木已经减少一半
时间：2018-12-03 作者：英语课 分类：英语生活新闻
英语课
There is good and bad news 1 about trees. The good news is there are seven times more than we thought 2. Scientists 3 thought we had 4 400 billion 5 trees, but we have three trillion. That's a three followed by 12 zeroes 6. For each person 7 alive 8 today, there are 420 trees. A researcher 9 said 10 these numbers were not good or bad news.
The bad news is that we once had six trillion trees. We lost three trillion trees. Europe 11 was 12 once a giant 13 forest 14. Now it is fields 15 and cities. Another 15 billion trees are lost each year. This is a lot more than 100 years ago. The researcher said we must do more to make forests 16 healthy again.
The bad news is that we once had six trillion trees. We lost three trillion trees. Europe 11 was 12 once a giant 13 forest 14. Now it is fields 15 and cities. Another 15 billion trees are lost each year. This is a lot more than 100 years ago. The researcher said we must do more to make forests 16 healthy again.
2 thought
n.想法，思想，思维，思潮，关心，挂念；v.vbl.think的过去式和过去分词
- It was just a thought.这仅仅是一个想法。
- She thought he had a cold.她认为他感冒了。
3 scientists
n.科学家( scientist的名词复数 )
- Scientists have established a connection between cholesterol levels and heart disease. 科学家已证实胆固醇含量与心脏病之间有关联。
- Scientists disagree about how the universe was created. 科学家对宇宙是怎样形成的有分歧。
4 had
vbl.have的过去式和过去分词；conj.有
- I just had a good idea!我有个好主意！
- The boy had a small branch of a tree in his hand.这个男孩手上拿一条小树枝。
5 billion
num.十亿；数以十亿计；大量；一万亿
- A billion is a large number.十亿是个大数目。
- They've spent nearly a billion dollars on it already.他们已经在那上面花了近10亿美元。
6 zeroes
n.（数字）零( zero的名词复数 )；零点；零度；没有
- The number one thousand is written with a one and three zeroes. 一千这个数字的写法是一个一加三个零。 来自互联网
- Trailing zeroes in the decimal portion are discarded. 在小数部分尾数加0将被废弃。 来自互联网
7 person
n.人
- I would never trust in that kind of person.我绝不会相信那种人。
- She is the very person I wanted to see.她正是我要见的人。
9 researcher
n.研究员
- First,he had to establish his credentials as a researcher.首先，他得证明自己做调查员的资格。
- It was an unexpected turn for a researcher.对于一个学术研究者来说，这是一个出乎意料的转机。
10 said
v.动词say的过去式、过去分词
- He said to me that he could not come.他对我说他不能来。
- He said to his mother that he would do it by himself.他对他的母亲说他将自己独立做那件事。
11 Europe
n.欧洲
- Have you traveled in Europe?你到欧洲旅行过吗？
- We're planning to visit Europe this summer.我们正打算今年夏天去欧洲旅行。
13 giant
adj.庞大的，巨大的；n.巨人，大力士，巨大的怪物
- The whale is the giant of the sea.鲸鱼是海洋中的巨人。
- It is a giant egg.它是一只巨大的蛋。
14 forest
n.森林，园林，林火；vt.用树林覆盖，植树
- A lion is the king of the forest.狮子是丛林之王。
- I like reading in the forest.我喜欢在树林里读书。