3 . Hibernation（冬眠）is a way to spend winter for many animals. Some animals will hibernate when the food supply runs low and the temperature drops, causing it to be too cold to wander about.

Some animals might go into a deep sleep for long time, while others will just slow down but remain active. Now let’s see something about chipmunks’ hibernation.

You might mistake these tiny animals for baby squirrels. That could be because they belong to the squirrel family. You can watch chipmunks play in spring, summer, and fall, but in winter, they enter their hibernation process.

Where chipmunks hibernate: You will find chipmunks digging a hole as deep as 3 feet under the ground usually directly under or next to a cover. During their active daytime , later in summer and early autumn , you will often enjoy watching them as they nestle（采集）their nuts between their cheeks and take them to their burrows(地洞）to save for their winter hibernation.

During the hibernation:During the winter hibernation, chipmunks’ body temperature will drop. They will sleep heavily waking occasionally(偶尔）for food , and not be seen again until springtime when they will play. During the late summer, they will work hard once again, collecting food to prepare for the next winter.

1. Some animals hibernate in winter, because ________.

A．it is too cold for them to wander about.

B．they like sleeping in the hole.

C．they have enough food to eat.

2. Which of the following isFalseabout chipmunks?

A．They belong to the squirrel family.

B．They are really baby squirrels.

C．They usually hibernate in winter.

3. During the hibernation, ________.

A．The chipmunks’ body temperature won’t rise

B．The chipmunks’ body temperature won’t drop

C．The chipmunk will never wake

4. What’s the main idea of the passage?

A．What kind of hibernation is best?

B．How chipmunks hibernate

C．Most of animals need hibernation

5. In which part of a newspaper can we read this passage?

A．Health

B．Science

C．Sports