单项选择题

Female sea turtles, before laying (her) eggs, swim (as much) as 2,000 kilometers (to return) to the beaches (where)they themselves were hatched.

A. her
B. as much
C. to return
D. where
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单项选择题
The ability to (talk) is one of the (skill) that makes (humans different) from the rest of the (animal world).
A. talk
B. skill
C. humans different
D. animal world
单项选择题
(Despite) the growth of (manufacturing) and other industries, the economy of the state of Texas (has) remained heavily (dependence) on oil and gas.
A. Despite
B. manufacturing
C. has
D. dependence
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