[ Vocabulary ]
Mirrors would then concentrate this stream within the tube into a continuous infrared __________ beam.
A. latitude
B. laser
C. mutation
D. magma
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Subject Verb Agreement › ViewSunshine and water _____ important for growth.
A. is
B. are
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Most scientists know him well. However, very few ordinary people have heard of him.
A. He is the only scientist that is not known to the general public.
B. Not only scientists but also the general public know him as a big name.
C. Although he is well known to scientists, he is little known to the general public
D. Many ordinary people know him better than most scientists do.
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