1. Although the sun is the prime mover of our weather, it is forever unpredictable.
(A)primary (B)first-rate (C)first
2. Seamounts(海山), conical elevations formed beneath the ocean, are the most prominent formations on the ocean bottom.
(A)battered (B)ancient (C)conspicuous
3. It is generally believed that the principal ancestor of the domestic cat is the Libyan desert cat.
(A)chief (B)official (C)only
4. Geneticist Barbara McClintock discovered that genes, which prescribe the function of cells in plants and animals, can move in unpredictable ways.
(A)inhibit (B)mimic (C)dictate
5. Because light travels more quickly than sound, a rumble of thunder never precedesa bolt of lightning.
(A) follows (B) accompanies (C) comes before
6. The Social Insurance Number (SIN) card is the primary mode of identification for Canadians.
(A) principal (B) original (C) prior
7. Prior to the use of nickel in 1835, spoons were made exclusively of silver or pewter.
(A) Before (B) In (C) At the time of
8. The preliminary carving of Iroquois(易洛魁族人)masks was done on living trees because it was believed that by this means the masks would also have life.
(A) initial (B) ceremonial (C) careful
9. The biologist needed more proof before her theory could be accepted.
(A) financing (B) publications (C) evidence
10. When David came late, the teacher warned that he must be prompt.
(A) precise (B) opportune (C) punctual
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