1 . It was a few years ago, and I took a holiday-season job in a video store. One day, an elderly woman _________ my store, along with a young woman who I _________ was her daughter. The daughter showed _________, rolling her eyes, sighing and checking her watch every few seconds.

The elderly woman separated from the young one and _________ to search through the DVDS on the nearest shelf. I _______ and asked if I could help her _________ something. The woman smiled at me and showed me a title on a piece of paper.

Rather than rushing off to _________ the DVD for the woman, I asked her to walk with me _________ I could show her where she could find it. Looking _________, I think I wanted to enjoy her __________ for a moment. Something about her __________ movements reminded me of my mother, who passed away a few years ago.

As we walked along the back of the store, I __________ what was on the shelves: old television shows, action movies, cartoons, etc. The woman seemed ________ the unrushed company and casual conversation.

We ________ the movie, and I praised her for her choice. She smiled and told me it was one she had __________ when she was at her son’s age and that she hoped he would enjoy it as much as she had.

I ________ the old woman to the cashier and then stepped back toward the young woman. “Is that your __________?” I asked. She rolled her eyes and said, “Yeah.” Mind some __________?” I asked. “Of course not,” said the daughter.

“Cherish（珍爱）her,” I said. And then I answered her surprised expression by saying, “When she’s __________, it’s the little moments that’ll come back to you. Times like this. I know.” It was __________. I still missed my mom and remembered the times when I’d used my impatience to make her upset.

1.

A．closed

B．entered

C．passed

D．left

2.

A．knew

B．realized

C．guessed

D．explained

3.

A．kindness

B．courage

C．interest

D．impatience

4.

A．began

B．continued

C．forgot

D．agreed

5.

A．moved around

B．walked over

C．dropped out

D．fell behind

6.

A．buy

B．carry

C．get

D．find

7.

A．make

B．play

C．get

D．borrow

8.

A．so

B．or

C．and

D．but

9.

A．back

B．forward

C．up

D．down

10.

A．work

B．company

C．success

D．performance

11.

A．careful

B．careless

C．strong

D．weak

12.

A．changed

B．designed

C．examined

D．introduced

13.

A．worried about

B．angry at

C．happy with

D．afraid of

14.

A．developed

B．watched

C．missed

D．found

15.

A．wanted

B．hated

C．enjoyed

D．remembered

16.

A．pushed

B．carried

C．drove

D．sent

17.

A．daughter

B．girl

C．mom

D．boss

18.

A．attention

B．advice

C．support

D．promise

19.

A．done

B．gone

C．accepted

D．asked

20.

A．true

B．appropriate

C．reasonable

D．impossible

2 . Far from the land of Antarctica, a huge shelf of ice meets the ocean. At the underside of the shelf there lives a small fish, the Antarctic cod.

For forty years scientists have been curious about that fish. How does it live where most fish would freeze to death? It must have some secret. The Antarctic is not a comfortable place to work and research has been slow. Now it seems we have an answer.

Research was begun by cutting holes in the ice and catching the fish. Scientists studied the fish’s blood and measured its freezing point.

The fish were taken from seawater that had a temperature of -1.88℃ and many tiny pieces of ice floating in it. The blood of the fish did not begin to freeze until its temperature was lowered to -2.05℃. That small difference is enough for the fish to live at the freezing temperature of the ice-salt mixture.

The scientists’ next research job was clear: Find out what in the fish’s blood kept it from freezing. Their search led to some really strange thing made up of a protein never before seen in the blood of a fish. When it was removed, the blood froze at seawater temperature. When it was put back, the blood again had its antifreeze quality and a lowered freezing point.

Study showed that it is an unusual kind of protein. It has many small sugar molecules held in special positions within each big protein molecule. Because of its sugar content, it is called a glycoprotein. So it has come to be called the antifreeze fish glycoprotein. Or AFGP.

1. What is the text mainly about?

A．The terrible conditions in the Antarctic.

B．A special fish living in freezing waters.

C．The ice shelf around Antarctica.

D．Protection of the Antarctic cod.

2. Why can the Antarctic cod live at the freezing temperature?

A．The seawater has a temperature of -1.88℃.

B．It loves to live in the ice-salt mixture.

C．A special protein keeps it from freezing.

D．Its blood has a temperature lower than -2.05℃.

3. What does the underlined word “it” in Paragraph 5 refer to?

A．A type of ice-salt mixture.	B．A newly found protein.
C．Fish blood.	D．Sugar molecule.

4. What does “glyco-” in the underlined word “glycoprotein” in the last paragraph mean?

A．sugar	B．ice
C．blood	D．molecule