### 第1段

1 .<-NARRATOR:-> Now listen to part of a lecture in a biology class.

### 第2段

1 .<-MALE PROFESSOR:-> I know some scientists who were observing snakes, in the wild.

2 .And they witnessed an encounter of this sort between two rattlesnakes.

### 第3段

1 .As you may know, rattlesnakes eat various kinds of small animals-small animals that live underground, in burrows, in little holes in the ground.

2 .And what these scientists saw was, these two rattlesnakes had found the same hole,

3 .and both wanted to eat whatever food was in that hole.

### 第4段

1 .So what happened was,

2 .the two rattlesnakes faced each other...

3 .and then they lifted their bodies into an upright position and made themselves as tall as possible...

4 .and then they started pushing each other, kind of wrestling with one another,

5 .each snake trying to gain control of the other snake.

6 .And what's interesting

7 .is that, during all this pushing and shoving and maneuvering,

8 .neither snake ever tried to bite the other snake,

9 .neither snake ever tried to injure the other snake.

### 第5段

1 .So then, after this went on for a while,

2 .one of the snakes

3 .finally gained control of the other snake,

4 .pushed it to the ground and held it there.

5 .At that point, the snake that was on top

6 .could have easily bitten the other snake.

7 .But it didn't-

8 .instead, it just released the other snake,

9 .just let it go.

10 .The snake that had lost

11 .just slithered away...

12 .and the snake that had won went down into the hole to look for food.