Biodiversity(生物多样性), or biological diversity, is a wide-ranging concept that covers all the different kinds of plant and animal species present on earth. Environmentalists believe that many millions of species exist. As all these living organisms are dependent on each other in some way, biodiversity is desirable. Any loss to the planet is actually a loss for mankind as well, and it is our responsibility to try and save Earth’s biodiversity.
Biodiversity has a vital role to play in the evolution（演变）of species. Species become extinct, but new species evolve, and this is how a balance is maintained. This may sound pretty simple, but it takes millions of years for changes to take place.
Biodiversity is also very important to the stability of food webs. Damage to them can mean disaster for an entire ecosystem. The extinction of a single animal species can put huge pressure on the numerous other species dependent on it.
Biodiversity also has an important role to play in human society. Apart from being the most intelligent species on earth, human beings are also the most dependent. We depend on nature to meet our basic needs. When we change the balance of nature to create our cities and bring about our technical advances, we knowing or unknowing cause great damage to the ecosystem. This must be understood, and the damages must be reversed（颠倒）in any way they can to ensure that the balance of the ecosystem is maintained.
【小题1】We learn from the first paragraph that_________.
A biodiversity can be seen
B all living species are found on earth.
C people everywhere are aware of the importance of biodiversity
D the loss of any species can affect humans
【小题2】Why can change in food webs lead to disaster?
A Because it can make people suffer from disease
B Because it can put huge pressure on some species
C Because it takes a long time for such changes to take place
D Because it will damage ninety-nine percent of species
【小题3】What does the underlined word probably mean?
A 画线  B Peace  C Strength  D Variety
【小题4】We learn from the last paragraph that __________.
A humans are as independent as they are intelligent
B the balance of the ecosystem is easily maintained
C nature has given us a lot
D nature is taking revenge on us
【小题5】Which of the following may be the best title for this passage?
A Food Webs are Closely Related to Biodiversity.
B Biodiversity Plays a Very Important Role in Evolution
C How Biodiversity Affects Human Society.
D Understanding Biodiversity and Its Importance.

阅读理解

“Life is speeding up(加快速度). Everyone is getting unwell.” This may sound like something someone would say today. But in fact, an unknown person wrote it.

Inventions can change our lives. But have all these things really improved our lives? Imagine this. You’re doing your homework on the computer. Your mobile phone rings and the noise from the television is getting louder and louder. Suddenly the computer is turned off and you lose all your work. How do you feel? Inventions have speeded up our lives, but they often leave us feeling tired.

One family in England went “back in time” to see what life was like without these inventions. The grandparents, with their daughter and grandsons Ben 10 and Tom 7, spent nine weeks in an old house. They had no computers or mobile phones. The grandmother, Linda, said, “The more things you have, the harder life becomes.” And Ben also noticed that his grandmother had changed. She cooked delicious food for them!

根据短文内容，选择正确答案。

1.The writer uses the quotation(引语) at the beginning to _____.

2.In the passage the writer describes a picture to show that new inventions _____.

3.The family chose to spend some time in an old house because _____.

4. According to the passage, which of the following is NOT true?

5.The passage is mainly about _____.

It feels like every time my mother and I start to have a conversation, it turns into an argument. We talk about something as simple as dinner plans and suddenly, my mother will push the conversation into World War III. All these because I don’t plan to be a doctor. And much to her sadness, I don’t want to do any job related(和…相关) to science, either. In fact, when I said that I planned to major(主修) in English and communications, Her heart was broken.

“Why can’t you be like my friend’s son?” she bemoans(抱怨) all the time. Her friend’s son received a four-year scholarship and is now earning 70,000 dollars a year as an engineer. I can’t be like him. He is Mr. Perfect. I’m the type of person who loves to help out in the community, write until the sun goes down, and most of all, wants to achieve a career because I love it, not because of fame (名声) or salary(薪水).

I understand why my mother is worried about my future major. I’ve seen my mother struggle to raise me on her small salary and work long hours. She leaves the house around 6.30 a.m. and usually comes home around 5 p.m. or even 6 p.m. However, I want her to know that by becoming a doctor, it doesn’t mean I’ll be successful. I’d rather follow my dreams and create my own future.

1. Which topic do the writer and his mother often talk about?

A. The writer’s studies.   B. The writer’s future job    C. Dinner plans    D. World War III

2.From Paragraph 1，we know that the writer’s mother ____________.

A. doesn’t want the writer to major in English

B. doesn’t think the writer should be a doctor

C. gets along very well with the writer

D. thinks working in the science field is a good idea

3.Which sentence is probably TRUE about the writer?

A. He wants to be like his mother’s friend’s son.

B. He wants to find a job in his community in the future.

C. He doesn’t think his mother’s friend’s son is perfect.

D. He wants to do something he really likes in the future.

4.We can know from the last paragraph that ____.

A. the writer’s mother works very hard for the family

B. the writer doesn’t know what his future will be like

C. the writer doesn’t think being a doctor is a good job

D. the writer sometimes thinks his mother’s advice is very good

It feels like every time my mother and I start to have a conversation, it turns into an argument. We talk about something as simple as dinner plans and suddenly, my mother will push the conversation into World War III. All these because I don’t plan to be a doctor. And much to her sadness, I don’t want to do any job related(和…相关) to science, either. In fact, when I said that I planned to major(主修) in English and communications, Her heart was broken.
“Why can’t you be like my friend’s son?” she bemoans(抱怨) all the time. Her friend’s son received a four-year scholarship and is now earning 70,000 dollars a year as an engineer. I can’t be like him. He is Mr. Perfect. I’m the type of person who loves to help out in the community, write until the sun goes down, and most of all, wants to achieve a career because I love it, not because of fame (名声) or salary(薪水).
I understand why my mother is worried about my future major. I’ve seen my mother struggle to raise me on her small salary and work long hours. She leaves the house around 6.30 a.m. and usually comes home around 5 p.m. or even 6 p.m. However, I want her to know that by becoming a doctor, it doesn’t mean I’ll be successful. I’d rather follow my dreams and create my own future.
【小题1】 Which topic do the writer and his mother often talk about?