Topics: Vocabulary
A group in a scientific experiment that serves as a reference for comparison to the experimental group; a group that is untreated by the factor being tested.
A. variable
B. trials
C. control group
D. field study
Select your answer:

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Grammar › ViewAna enjoys_______________soccer.
A. Play soccer
B. playing
C. play baseball
D. none
Idioms › View
If it is “par for the course”, it is ___.
a. typical
b. very good
c. terrible
