1. Snakes have an organ in a pit on their heads _____________ infrared rays. a. detects b. a detection of c. it detects d. that detects
that detects
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2. Helium is not inflammable, ________________ therefore safer than hydrogen. a. that is b. and is c. but is d. and it
b. and is
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3. In 1849 Walter Hunt, _______________ American inventor, patented a design that served as the basis for modern safety pins. a. an b. he was an c. being d. who was, as an
an
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4. Ansel Adams was a landscape photographer _______________ photographs of the western United States show nature on a grand scale. a. whose b. of his c. of whom d. his
whose
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5. Contact lenses _______________ of acrylic are more transparent and less fragile than lenses made of glass. a. making b. made c. are made d. which make
made
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6. _____________other cells in the body, nerve cells are not healed or replaced when they are damaged or destroyed. a. Different b. Unlikely c. Unlike d. But
Unlike
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8. ___________most brilliant Greek inventor was Archimedes, who lived about 2,250 years ago. a. The b. One of the c. As the d. Of the
The
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9. ____________ flying, a bat emits a rapid series of ultrasonic signals, which bounce off any object in its path. a. When it b. When it is c. It is d. When is
b. When it is
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10. _____________ does not circle around the earth was proven by Galileo. a. Since the rest of the universe b. As the rest of the universe c. The rest of the universe d. That the rest of the universe
d. That the rest of the universe
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11. _______________ cell in the body is far from a capillary. a. Not b. No c. Not only a d. Neither a
No
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12. Ralph Waldo Emerson’s belief ____________ the individual freedom of all people greatly influenced later American thinkers. a. as of b. on c. in d. as in
in
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13. Thomas Malthus claimed that disease, war, famine, and ___________ act as checks on population growth. a. moral restraining b. morally restrain c. by moral restraint d. moral restraint
moral restraint
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14. _____________ phobias do not involve loss of contact with reality, they may severely limit a person’s life. a. Although b. Despite c. That d. As
Although
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15. During the 1930s, unsuitable farming techniques and excessive grazing of grassland in the Great plains produces ________________ a. which it became known as the Dust Bowl b. what became known as the Dust Bowl c. it became known as
