单项选择题

A. For scientific study. B. For field guides.
C. For entertainment. D. For some film background.
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单项选择题
A. They have no assignments. B. They are supposed to read the next chapter.C. They need to compose an essay about the show they will view.D. They are supposed to discuss their opinions about the program.
A. They have no assignments.
B. They are supposed to read the next chapter.
C. They need to compose an essay about the show they will view.
D. They are supposed to discuss their opinions about the program.
单项选择题
A. 6,400 kilometers. B. 2,168 kilometers. C. 3,168 kilometers. D. 2,186 kilometers.
A. 6,400 kilometers. B. 2,168 kilometers.
C. 3,168 kilometers. D. 2,186 kilometers.
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