单项选择题

She could fix machine without referring to the instructions.

A. observing
B. learning
C. consulting
D. understanding
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单项选择题
The land crab a forest-floor scavenger native to tropical America, migrates to the water to breed.
A. die
B. swim
C. mate
D. hatch
单项选择题
His novel was adapted for the stage in 1949 as a musical play entitled as St. Louis woman.
A. closer for
B. included
C. starred
D. named
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