Sometimes, kindness is a simple answer in a difficult and challenging world.
When my granddaughter, Skylar, was young, one day we went out and had a contest called “Who can make the most people smile. “ And we continue it today. When shopping, we were walking in the supermarket and noticed someone walking down the aisle with her head down. Skylar walked up to her and gave her a big smile. I watched her walk down the aisle, turned around and smiled at Skylar again or perhaps smiled at someone else.
Kindness is a chain that pulls us all together. Every single act of kindness has a ripple effect(连锁反应). In 2002, my dad had a series of strokes and other illness. My dad had been doing nice things for all sorts of people for years, from the street crossing guard, to the waitress in a restaurant, to a friend’s mother. That same day, I made cookies for the janitor（门卫） at the post office. When I gave him the cookies he actually looked a little embarrassed. “Why, Linda?” he asked. “Because I appreciate you!” I answered. “When I get here at 6 am and it is still dark out and it is a little scary, I know you are inside and I feel safe. And when I first moved here and my post office box was always empty, you always cheered me on. And you always keep this place clean.”
That evening his wife called me and said that he was overwhelmed(受宠若惊的). “No one even knows his name, let alone bakes him cookies!” she said. （278 words）
What was the author’s attitude to the contest in the supermarket?

A．positive	B．negative
C．neutral	D．curious

From the text, what can we know about the janitor?

A．He led a very poor life at that time.

B．He always went to work after six o’clock.

C．He was fond of baking cookies.

D．He was kind and grateful.

What does the passage mainly talk about?

A．Kindness can always be passed on.

B．An experience in a supermarket.

C．The importance of having a kind dad.

D．Smile makes your life meaningful.