很多同学们在准备
Narrator
Now get ready to answer the questions. You may use your notes to help you answer.
1. What is the discussion mainly about?
(A)Why most planets are larger than Pluto
(B)The reasons some objects may soon be considered planets
(C)How Pluto challenges the conventional idea of a planet
(D)The discovery of Kuiper belt objects
2. How does the professor emphasize his point about Pluto’s size?
(A)By stating the dimensions of nearby planets
(B)By explaining the relationship between Pluto’s size and its orbit
(C)By identifying the reasons why Pluto was originally misclassified
(D)By comparing Pluto to other planets and objects in the solar system
3. What are two key features of Pluto’s orbit mentioned in the discussion?
Click on 2 answers.
(A)Pluto’s orbit is influenced by Neptune’s gravity.
(B)Pluto’s orbit is nearly circular.
(C)Pluto’s orbit is at an angle to the other planets’ orbits.
(D)Pluto’s orbit passes nearer to the Sun than most of the other planets.
4. According to the discussion, what are some reasons for NOT classifying Pluto as a planet?
Click on 3 answers.
(A)It has an atmosphere.
(B)It is located in the Kuiper belt.
(C)It is composed of rock and ice.
(D)It is located too far from the Sun.
(E)It is much smaller than the other planets.
Narrator
Listen again to part of the lecture. Then answer the question.
Professor
…When you look at the other planets, especially the planets in the outer solar system, where Pluto orbits, you see that Pluto stands out, it’s the oddball…and I’ll give you one guess why.
5. What does the professor mean when he says this:
[This text will only be heard.]
Professor
“I’ll give you one guess why.”
(A)He thinks the question is difficult to answer.
(B)He thinks the reason is obvious.
(C)He does not expect a reply.
(D)He does not want many people to reply.
Narrator
Listen again to part of the lecture. Then answer the question.
Student A
Hmmm, well…I’d still call it a planet. Like I said before…it may be small, but it’s got an atmosphere and a moon, it orbits the Sun and…
Student B
Come on…it, it’s obviously a KBO. I mean, it’s in the Kuiper belt, it’s made of the same materials, it orbits the same way and it’s way smaller than any other planet. I think it’s clear.
6. What can be inferred about the students?
(A)They both disagree with the professor’s conclusion.
(B)The woman has not yet reached a conclusion about Pluto.
(C)The man easily convinced the woman to change her mind.
(D)They have come to different conclusions about Pluto.