题目内容：

One January morning, Thomas Smith is walking his dog, Jack, in the park. Mr. Smith is sitting under a tree and Jack is running on the ice lake. Suddenly, the dog falls into the water and can’t get out.

“ I must save my dog,” says Mr. Smith. He doesn’t think much, and jumps into the cold water. It’s difficult for him to swim in the cold water, but he is just thinking about saving Jack.

Luckily, he helps Jack out of the water. And they are safe now. “ When we get out of the water, everybody asks how Jack is, and nobody is worried about me!” Mr. Smith says with a smile.

Julie Brown sees this thing, too. “ The dog gets onto the ice lake,” she says. “Suddenly, it starts to go under. Many people see it and they are shouting for help. But only Mr. Smith jumps into the cold water to save it.”

People think Mr. Smith is a hero. “ In fact, many people in the world are doing the same as me,” Mr. Smith says. “But from now on, I must let Jack be away from the ice lake.”

Animals are our great friends. Can you do the same for them like Mr. Smith?

根据短文内容。选择最佳答案。

1.When does the story happen?

A. On a cold morning in February.    B. On a warm afternoon in January.

C. On a warm afternoon in February.    D. On a cold morning in January.

2.What’s Smith doing while the dog is running on the ice lake?

A. He is taking a walk in the park.    B. He is sitting under a tree.

C. He is talking with someone.    D. He is playing with another dog.

3.Why does only Mr. Smith jump into the cold water to save Jack?

A. Because he is good at swimming.

B. Because he loves his dog very much.

C. Because other people don’t like the dog.

D. Because no one sees the dog fall into the lake.

4.Which of the following is true?

A. Mr. Smith feels angry because no one is worried about him.

B. Mr. Smith lets Jack get onto the ice but it falls into the water again.

C. Mr. Smith won’t let Jack play on the ice lake next time.

D. Julie Brown doesn’t think it’s necessary（必要的） for Mr. Smith to do so.

5.What does the writer mainly want to tell us?

A. To be good with animals.

B. To help people in danger.

C. To stay away from the ice lake.

D. To learn to swim in the lake.