单项选择题

The (development) of (professional) sports in our country (dates) back (to nineteenth) century.

A．development
B．professional
C．dates
D．to nineteenth
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单项选择题
Critical thinkers are (able) to identify (main) issues, recognize (underlying) assumptions, and (evaluating) evidence.
A．able
B．main
C．underlying
D．evaluating
单项选择题
(All) fruit contains fiber: an orange provides seven, (a apple five), and a banana four, but (half of) a grapefruit (provides) six grams.
A．All
B．a apple five
C．half of
D．provides
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