题目内容：

    There was something in the elderly woman's behavior that caught my eye. Although slow and unsure of step, the woman moved with deliberation, and there was no hesitation in her gestures. She was as good as anyone else, her movements suggested. And she had a job to do.

The elderly woman had walked into the store along with a younger woman who I guessed was her daughter. The daughter was displaying a serious case of impatience, rolling her eyes, huffing and sighing, checking her watch every few seconds. If she had possessed a belt, her mother would have been fastened to it as a means of dragging her along to keep step with the rush of other shoppers.

The older woman detached from the younger one and began to glance over the DVDs on the nearest shelf. After the slightest hesitation, I walked over and asked if I could help her find something. The woman smiled up at me and showed me a title scrawled(潦草地写) on a crumpled piece of paper. The title was unusual and a bit unfamiliar. Clearly a person looking for it knew a little about movies, about quality.

Rather than rushing off to locate the DVD for the woman, I asked her to walk with me so I could show her where she could find it. Looking back, I think I wanted to enjoy her company for a moment. Something about her deliberate movements reminded me of my own mother, who'd passed away the previous Christmas.

As we walked along the back of the store, I narrated its floor plan: old television shows, action movies, cartoons, science fiction. The woman seemed glad of the unrushed company and casual conversation.

We found the movie, and I complimented her on her choice. She smiled and told me it was one she'd enjoyed when she was her son's age and that she hoped he would enjoy it as much as she had. Maybe, she said with a hint of eagerness, he could enjoy it with his own young children. Then, reluctantly, I had to return the elderly woman to her keeper, who was still tapping her foot at the front of the store.

I accompanied the older woman to the queue at the cash register and then stepped back and lingered near the younger woman. When the older woman's turn in line came, she paid in cash, counting out the dollars and coins with the same sureness she'd displayed earlier ...

1.What does "she had a job to do" (Para. 1) mean according to the context?

A.She had a regular job in the store. B.She wanted to ask for help.

C.She wanted to buy a DVD. D.She was thinking of what to buy.

2.What does the title of the DVD reveal according to the shop assistant?

A.The elderly woman had some knowledge about movies.

B.The elderly woman liked movies for young children.

C.The elderly woman preferred movies her son liked.

D.The elderly woman liked both old and new movies.

3.While looking for the DVD with the old woman, the shop assistant was ______.

A.hesitant B.casual

C.cautious D.considerate

4.What is the main purpose of this passage?

A.To describe what a movie nut is like

B.To remind readers to spending more time accompanying family

C.To stress the importance of company and understanding.

D.To explore the key aspects of current parental-child relationship