SECTION A CONVERSATIONS
Directions: In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow.
听力原文:W: So what year were you born?
M: 1971. I'm part of the Generation X.
W: Generation X? I think I’ve heard of it, but I don’t know what it means.
M: It's basically a trendy classification for the generation born in the United States after 1965. It was coined in 1991 by author Douglas Coupland, who wrote a book by that title.
W: What characterizes the X-generation?
M: Well, they are basically college educated and dissatisfied with their careers.
W: So, they are basically overeducated and underemployed?
M: Right. And they also have a pessimistic attitude about society. They don't see life getting any better. They don't even like the label "Generation X".
W: I can see why. Nobody likes to be stereotyped.
M: There are actually two different stereotypes associated with the Generation X-ers. One is the slacker image in which the individual has no motivation. The other extreme is the highly educated computer hacker who has his own business.
W: So tell me some more terms about the Generation X.
M: Sure. There's another term called "McJob". It was coined by Coupland and refers to low paying jobs with no prestige and no future.
W: Like working at McDonalds? Is that where they got the "Mc"?
M: Exactly.
When was the term "the Generation X" made up?
A. In 1971.
B. In 196,5.
C. In 1991.
D. After 1965.
Mounting evidence has led astronomers to just an improbable conclusion; At least 90 percent and possibly 99 percent of all matter in the universe is completely【C1】______ . Astronomers call this stuff dark matter.
An astronomer first reported the matter after noting some unusual behaviour in visible matter. In 1993, Swiss astrophysicist Fritz Zwicky concluded that 【C2】______ was causing strange gravitational effects【C3】______ these galaxies.
Galaxies are like【C4】______ islands in deep space【C5】______ billions of stars that are held together by the force of【C7】______ .Some galaxies are part of【C6】______ systems called clusters; which contain many galaxies. Most galaxies; belong to smaller systems called groups. Groups and clusters in 【C8】______ form. even larger【C9】______ known as super-clusters. Just【C10】______ the force of gravity keeps stars together in galaxies the force of gravity【C11】______to keep galaxies together in clusters~
This same force of gravity keeps planets【C12】______ around the sun【C13】______ flying off into space. How great a force gravity exerts depends on the mass of the objects【C14】______ and the distance between them, a【C15】______ discovered by Newton. The amount of mass and the distance between objects also【C16】______ how fast the objects travel as they orbit each other. The force of its gravity keeps Earth and the other planets【C17】______ orbit around it. The orbital speeds of the planets【C18】______ with increasing distance from the sun. The planet nearest to the sun travels at an orbital speed of 48 kilometers per second【C19】______ the distant planet Pluto orbits【C20】______ speed of 7 kilometers per second
【C1】
A. visible
B. invisible
C. perceived
D. tangible