单项选择题

A. Introducing readers to unfamiliar situations.
B. Reminding readers of the truth.
C. Informing people new scientific development.
D. Telling people how to serve their communities.
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单项选择题
A. The man is not determined. B. The man is poorly experienced in the aquatic field. C. The man is not honest. D. The man was late for the interview.
A. The man is not determined.
B. The man is poorly experienced in the aquatic field.
C. The man is not honest.
D. The man was late for the interview.
单项选择题
A. Species. B. The energy a person needs. C. Genes. D. Personal needs.
A. Species.
B. The energy a person needs.
C. Genes.
D. Personal needs.
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