The term extrasolar, as used in paragraph 3 means
inside our solar system.
outside our solar system.
larger than our solar system.
smaller than our solar system. correct answerOutside our solar system
From this article we can infer that
• many machines depend on the properties of mol...
smaller than our solar system. correct answerOutside our solar system
From this article we can infer that
• many machines depend on the properties of molecules.
• the world is not governed by particles or atoms, but is chaotic.
• the ancient Greeks' concept of four elements was the basis of modern science.
• modern science does not depend on molecular knowledge. correct answermany machines depend on
the properties of molecules.
When liquid water is changed to ice, the particles are
• more energetic.
• more fluid.
• banded further apart.
• bound closer together. correct answerBound closer together
An appropriate title for this selection would be
• Gold in the Elements.
• The Makeup of Everything.
• How the Greeks Failed.
• The Useless Molecule. correct answerThe Make up of Everything
Based on this article, we can assume that the author
, • does not appreciate vocabulary and illustrations.
• believes the study of elements is no longer relevant.
• is knowledgeable about history and science.
• uses analogies that are confusing. correct answerIs Knowledgeable about history and science
From the passage, we learn that ancient Greeks proposed that
• there are 105 different elements in the world.
• elements are substances that contain many kinds of atoms.
• the behavior of molecules cannot be observed.
• all things are made up of atoms. correct answerall things are made up of atoms.
In the context of this article, the word conjured as used in paragraph one means
conferred.
intertwined.
imagined.
swept. correct answerImagined
The article states that
• HIV spread worldwide from a city in the Democratic Republic of Congo.
• intravenous drug users were the first identifiable victims of HIV.
• we may soon know definitively the mechanism of chimp virus infection of humans.
• researchers have identified 98% of the chimp genome. correct answer
According to the article, which statement is true?
• Chimps and humans share the same genes.
• AIDS is caused by a simple virus.
• Beatrice Hahn was the lead author of the science study.
• Cameroon was probably the birthplace of HIV. correct answerCameroon was probably the birthplace
of HIV.
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