(A) center
(B) surface
(C) mineral
(D) field

25.The author mentions "dark stones" and "white snow" in line 9 to illustrate that.

(A) meteorites are found most often in Antarctica
(B) glaciers stop meteorites from mixing with soil
(C) meteorites are easier to find in glacial areas
(D) most of Antarctica is covered with meteorites

26. The word "embedded" in line 10 is closest in meaning to

(A) isolated
(B) encased
(C)enhanced
(D) enlarged

27.The word "spotting" in line 17 is closest in meaning to

(A) removing
(B) identifying
(C)cooling
(D) falling

28.The passage suggests that which of the following is most commonly responsible for the poor preservation of meteorites that fall to Earth?

(A) The size of the fragments
(B) Ice sheets
(C) Erosion
(D) Desert heat

29.Where was the Mundrabilla meteorite discovered?

(A)On the Nullarbor Plain
(B)In a field
(C)On a mountain
(D)In Antarctica

30.The word "they" in line 25 refers to

(A)stony meteorites
(B) falls
(C)Earth materials
(D) ancient bodies

31.Why does the author mention carbonaceous chondrites (line 26)?

(A) They are the largest meteorites found on Earth
(B) They are most likely to be found whole.
(C) They come from outside the solar system.
(D) They may be related to the origins of life on Earth.

32.According to the passage, stony meteorites are

(A) composed of fragmented materials
(B) less likely to be discovered than iron meteorites
(C) mostly lost in space
(D) found only on the Nullarbor Plain

Questions 33-41

A pioneering set of experiments has been important in the revolution in our understanding of animal behavior-a revolution that eroded the behaviorist dogma that only humans have minds. These experiments were designed to detect consciousness-that is, signs of self-awareness or self-recognition-in animals other than humans.

The scientific investigation of an experience as private as consciousness is frustratingly beyond the usual tools of the experimental psychologist. This may be one reason that many researchers have shied away from the notion of mind and consciousness in nonhuman animals. In the late1960's, however, psychologist Gordon Gallup devised a test of the sense of self: the mirror test. if an animal were able to recognize its reflection in a mirror as "self," then it could be said to possess an awareness of self, or consciousness. It is known that a cat or a dog reacts to its own image in mirror, but often it treats it as that of another individual whose behavior very soon becomes puzzling and boring.

The experiment called for fanuliarizing the animal with the mirror and then marking the animal's forehead with a red spot. If the animal saw the reflection as just another individual, it might wonder about the curious red spot and might even touch the mirror. But if the animal realized that the reflection was of itself, it would probably touch the spot on its own body. The first time Gallup tried the experiment with a chimpanzee, the animal acted as if it knew that the reflection was its own, it touched the red spot on its forehead. Gallup' report of the experiment, published in a. 1970 article, was a milestone in our understanding of animal minds and psychologists wondered how widespread self-recognition would prove to be.