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B. That of
C. It is
D. More
Jawaban: B
2. In economics, "diminishing returns" describes .... resource inputs and production
A. Among
B. When it is
C. Among them
D. The relationship between
Jawaban: D
3. Operas can be broadly (a) classified (b) as either comedies or (c) they are tragedies (d)
Jawaban: D
4. Rarely ... remove the entire root of a dandelion because of its length and sturdiness
A. Can the casual gardener
B. The casual gardener