在下面对话的空格内填上一个适当的词，使对话意思完整，语句正确。

 （A）

A：Mum, I shall not have lunch at home today.

B：Why not, Linda?

A：I want to go to the pet（宠物） shops at noon with my classmates. Most of the students in our class have their own pets. Mum, as you know, I 1    got a pet yet.

B：What 2    of pet do you want to have?

A：A dog 3    a cat. I haven't decided yet.

B：You'd better not keep a dog in our flat. It would make much noise．And a dog has to go out every day, and there isn't a 4    near our building．And the dog food is expensive.

A：Then I'll have a cat．Cats are cheaper than dogs, and they are quiet, too.

B：Yes, cats are easier to5    

（B）

A：Huang Hai, why do you look so tired and worried today?

B：I got up very early this morning as my family has moved to a new building. The new flat（套间） is much 6   than the old one.

A：Congratulations!  You've moved to a new flat!

B：Thanks．But it's about ten kilometres from my new house to the school. It takes me a longer time to go to school. The population of Guangzhou is 7    very fast, you see．But there is not enough space for us to build new buildings in the city centre. Most of the new buildings have to be built in the places 8  away from the city centre.

A：I quite 9  with you．And people spend more money and more time on their way to work.

B：What's more, the traffic will be heavier and the air will be 10   because there are more and more buses and cars. So the population problem may be one of the serious problems of the world today.

（C）

A：Huang Xumei, I'm  glad you can come  for our Thanksgiving（感恩节） dinner.

B：Thanks for  11    me, Helen. Why do you call it dinner when we are eating at noon?

A：Because it's a big  12  . We call it dinner when we have a lot to eat.

B：Is that a chicken? It's so big!

A：No, it's a turkey（火鸡）. It's 13    bigger than a chicken.

B：Why do Americans and Canadians celebrate （庆祝）Thanksgiving?

A：It's  14   your  Mid-autumn Festival.  In China, families get together and enjoy looking at the bright, round 15   In America and Canada, families get together to celebrate the harvest（收获）.

B：So we each have an autumn festival. Something is the same in China, America and Canada．

One summer vacation in my college, my roommate Ted asked to me to work on his father’s farm in Argentina. The idea was exciting. Then I had second thoughts. I had never been far from New England, and I had been homesick my first few weeks at college. What about the language? The more I thought about it, the more the idea worried me.

Finally, I turned down the invitation. Then I realized I had turned down something I wanted to do because I was scared and felt depressed(沮丧). That experience taught me a valuable lesson and I developed a rule for myself: do what makes you anxious(焦虑); don’t do what makes you depressed.

In my senior year, I wanted to be a writer. But my professor wanted me to teach. I hesitated. The idea of writing was much scarier than spending a summer in Argentina. Back and forth I went, making my decision, unmaking it. Suddenly I realized that every time I gave up the idea of writing, that downhearted feeling went through me.

Giving up writing really depressed me. Then I learned another lesson. To avoid the depression meant having to bear much worry and concern.

When I first began writing articles, I often interviewed big names. Before each interview I would get butterflies in the stomach. One of them was the great composer Duke Ellington. On the stage and on television, he seemed very confident. Then I learned Ellington still got stage fright（害怕）. If Ellington still had anxiety attacks, how could I avoid them? I went on doing those frightening interviews. Little by little, I was even looking forward to the interviews. Where were those butterflies?

In truth, they were still there, but fewer of them. I had learned from a process psychologists（心理学家） call “extinction”. If you put an individual in an anxious situation often, finally there isn’t anything to be worried about, which brings me to a conclusion: you’ll never get rid of anxiety by avoiding the things that caused it.

The point is that the new, the different, is definitely scary. But each time you try something, you learn, and as the learning piles up, the world opens to you.

1.We can infer from the passage that the author________. 

A．finds it difficult to make decision

B．has found out what causes anxiety

C．was encouraged by Duke Ellington’s stage fright

D．no longer feels anxious about new experiences

2.What does the word “extinction” in Paragraph 6 means?

A．a person’s loss of confidence little by little

B．the natural development of a child’s abilities

C．the inborn ability to avoid anxious situations

D．the process of losing fear by keeping facing anxiety

3.Which of the following opinions does the writer probably accept?

A．Anxiety can be a positive drive

B．Hesitation leads to depression.

C．Avoiding anxiety reduces depression.

D．Depression is a signal that one is growing up.

4.What's the best title for the passage?

A．Confidence: Key to Success

B．Anxiety: Challenge by Another Name

C．Depression: A Psychological Appearance

D．Success: A Trip Through Anxiety and Depression