The word "favored" in line 2 is closest in meaning to()
A. preferred
B. recommended
C. imported
D. included
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Some ecologists believe()more than 50 percent of existing species will be lost in the next 100 years.
A. because
B. that
C. while there is
D. that there are
The chemical composition of sandstone is the same as()
A. that of sand
B. that sand is
C. sand is that
D. what of sand
In the (initial planning) for theaters, auditoriums, (but) any room (intended) primarily for listening, acoustics is a (major consideration).()
A. initial planning
B. but
C. intended
D. major consideration
The (first) piloted balloon (flight) across the Atlantic Ocean (took) place (at) 1978.()
A. first
B. flight
C. took
D. at