5.The passage implies which of the following about shergottites?
I.They are products of volcanic activity.
II.They derive from a planet larger than Earth.
III.They come from a planetary body with a chemical composition similar to that of Io.
(A) I only
(B) II only
(C) I and II only
(D) II and III only
6.According to the passage, a meteorite discovered on Earth is unlikely to have come from a large planet for which of the following reasons?
(A) There are fewer large planets in the solar system than there are asteroids.
(B) Most large planets have been volcanically inactive for more than a billion years.
(C) The gravitational pull of a large planet would probably prohibit fragments from escaping its orbit.
(D) There are no chondrites occurring naturally on Earth and probably none on other large planets.
7.The passage suggests that the age of shergottites is probably
(A) still entirely undetermined
(B) less than that of most other achondrites
(C) about 3.5 billion years
(D) the same as that of typical achondrites
8.According to the passage, the presence of chondrules in a meteorite indicates that the meteorite
(A) has probably come from Mars
(B) is older than the solar system itself
(C) has not been melted since the solar system formed
(D) is certainly less than 4 billion years old
9.The passage provides information to answer which of the following questions?
(A) What is the precise age of the solar system?
(B) How did shergottites get their name?
(C) What are the chemical properties shared by shergottites and Martian soils?
(D) What is a major feature of the Martian surface?
10.It can be inferred from the passage that each of the following is a consideration in determining whether a particular planet is a possible source of shergottites that have been discovered on Earth EXCEPT the
(A) planet's size
(B) planet's distance from Earth
(C) strength of the planet's field of gravity
(D) proximity of the planet to its moons
11.It can be inferred from the passage that most mete-orites found on Earth contain which of the following?
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