托福听力荟萃 26（在线收听）

S: This doesn’t have anything to do with the lecture, Dr. Brown. It's just

something I was wondering about.

T: I'm always glad to entertain questions.

S: What I want to know is, with all our space exploration, aren't astronomers

concerned that were polluting space, you know with spacecrafts and satellites?

T: That is an interesting question. Well, first of all, it's important to understand

the space isn’t that ______ as you might think. More than 1000 tons of debris

enters the earth's atmosphere every single day.

S: What? The spacecrafts don't need that much garbage?

T: No, but there are meteoroids entering our atmosphere almost constantly.

You are familiar with what the moon's surface looks like, right?

S: But we don't have these craters on earth. I don't understand.

T: Remember the moon's lack of atmosphere means that even small

______ make craters. But most of the meteoroids that hit the earth's

atmosphere melt or break up in the air.

S: Causing meteorite? The ______ of light we see is that meteoroids breaking

up, isn't it?

T: Yes, and getting back to your question about pollution, that's one way we

could deal with the ______ of satellites and spacecraft. The truth is we do have

a lot of ______ing debris, and traveling at 10 to 20 thousand miles per hour.

S: Really? I wouldn't want to collide with anything going that fast.

T: It's a real danger for spacecraft. But we could dispose the debris by simply

sending it back into the earth's atmosphere.

S: oh, so the debris was just burned up. Well, thanks a lot, Dr. Brown.

【填空答案】

1. pristine adj. 原始的，古时的；纯朴的

2.meteoroidsn. 流星体（meteoroid的复数）；

3.streaks n. 条痕；直横条（streak的复数）

4.debris n. 碎片，残骸

5．orbitn. 轨道；vt. 绕…轨道而行vi. 盘旋；绕轨道运行

【听力原文】

S: This doesn’t have anything to do with the lecture, Dr. Brown. It's just

something I was wondering about.

T: I'm always glad to entertain questions.

S: What I want to know is, with all our space exploration, aren't astronomers

concerned that were polluting space, you know with spacecrafts and satellites?

T: That is an interesting question. Well, first of all, it's important to understand

the space isn’t that pristine as you might think. More than 1000 tons of debris

enters the earth's atmosphere every single day.

S: What? The spacecrafts don't need that much garbage?

T: No, but there are meteoroids entering our atmosphere almost constantly.

You are familiar with what the moon's surface looks like, right?

S: But we don't have these craters on earth. I don't understand.

T: Remember the moon's lack of atmosphere means that even small

meteoroids make craters. But most of the meteoroids that hit the earth's

atmosphere melt or break up in the air.

S: Causing meteorite? The streaks of light we see is that meteoroids breaking

up, isn't it?

T: Yes, and getting back to your question about pollution, that's one way we

could deal with the debris of satellites and spacecraft. The truth is we do have

a lot of orbiting debris, and traveling at 10 to 20 thousand miles per hour.

S: Really? I wouldn't want to collide with anything going that fast.

T: It's a real danger for spacecraft. But we could dispose the debris by simply

sending it back into the earth's atmosphere.

S: oh, so the debris was just burned up. Well, thanks a lot, Dr. Brown.