Unit 1> Caring for Our Earth
Passage A
（三）、
窗体顶端
1.Answer: A tree frog has taken up residence in my studio. 
Answer: He stopped and turned around and just sat there looking at me.
2.Answer: Possibly the tone of my computer sounded to him like other tree frogs.
3.Answer: Frogs were dying around the world. 
Answer: Frogs were being found whose skin was like paper.
Answer: Frogs are an “indicator species”.
4.Answer: The frogs have a message for us.
Answer: We must be the adults for the planet.
Answer: There are no boundaries, that there is no more time.
三㈢窗体底端
understandable （四）、Answer:  greenhouse　residence　communicate　wired　humming　message　sensitivity　indicator
（五）、Answer:  1. d    2. a  3. b  4. e  5. c  1. tone threatening    2. sensitivity smell  3. affected climate  4. tap resources  5. concerns environment
（六）、  Answer:  1. subtle 2. were overtaken 3. species 4. decades 5. boundaries 6. audio 7. directly 8. focus 9. tone 10. cupped
（七）、 Answer:  1. at that rate 2. For the sake of 3. come to 4. by hand 5. vice versa
（八）、1. 年轻人有时会抱怨无法和父母沟通。(communicate with)
Answer: Young people sometimes complain of being unable to communicate with their parents.
2. 能在中国云南的一个苗家村落住下来一直是玛丽长久以来的梦想，现在她终于梦想成真了。(to take up residence)
Answer: It has been Mary’s long cherished dream to take up residence in a Miao village in Yunnan, China. Now her dream has finally come true.
3. 家养的动物习惯于依赖人，因此很难能在野外活下来。(survive)
Answer: Domestic animals are used to depending on humans, so it is difficult for them to survive in the wild.
4. 他突然有种恐惧感，觉得自己会因为经济不景气而被公司裁员。(overtake)
Answer: He was suddenly overtaken by a fear that he would be laid off by the company because of depression.
5. 我估计公交路线上堵车了，因为我都等了30分钟也没见一辆车开过去。(figure)
Answer: I figure that there is a traffic jam on the route of the bus, for I’ve waited for 30 minutes without seeing one passing by.
（九）、Answer: In spite of trade frictions, the US cannot do without China or vice versa.
        Answer: If you find yourself working without efficiency, you’d better relax for a while.
Answer: The speaker glanced around the audience this way and that before he started speaking.
Answer: My father’s opinion on my job change sounded to me like a warning.
Answer: The labor union agreed to give up a pay increase for the sake of more job opportunities.
（十）、Answer: The sandstorm is a horrible phenomenon. The clouds of dust are so heavy that you can hardly breathe. It is so dark that it may cause trafic accidents.
  　Answer: Droughts result from lack of water, which is essential for plants and animals. The failure of crops leads to food shortage, and sometimes even famine.
  　Answer: The flood washes away houses, destroys ields, and causes life and property losses. People may be left homeless and suffer diseases.Causes: The increase of disaste
rs is mainly caused by human activities. With the growth of population, we need more resources from the Earth. Deforestation, over-cultivation, together with other factors, lead to the imbalance of the ecosystem. And this in turn causes more natural disasters.
Passage B
　Think about it:
  1. What is Mission Zero?
  Answer: It is a goal set by Interface that the company will eliminate any negative impact Interface has on the environment by the year 2020.
  2. What can we do to achieve sustainability?
  Answer: We can start doing something first, then do something else. Only when everyone in our society is involved can we expect to transform our entire system into a sustainable one.
  3. Do you know you can figure out the meaning of a new word just by the context?   
  Answer: Open.
（十三）、Answer:
1. indicating the use of a lot of a particular thing
e.g. The labor-intensive products such as shoes, clothes, toys, hardware and so on, come primarily from small enterprises.
As agriculture has become more knowledge-intensive, farmers have greatly improved output with less land and labor.
2. without a particular thing
e.g. As the punishment for drunk driving is getting more severe, the sale of alcohol-free beer is on the rise.
Part of the attraction to the island is that tourists can buy imported goods there at duty-free prices.
3. having a very close and friendly relationship
e.g. Our client-intimate service contributes much to the growth of the company.
The GPS is designed in a user-intimate approach, and you can easily find your way just by a few touches on its screen.