Among the African American writers of the fist half of the 20th century,______was the most
A. Countee Cullen
B. Claude McKay
C. Jean Toomer
D. Langston Hughes
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Which of the following is the best title for the passage？
A. Has the Pleistocene Epoch Ended？
B. Another Ice Age in the Geologic Future Is Coming？
C. The Ice Ages: Are They Over？
D. Glacial Ice Will Be Present in Different Places？
The phrase "be well on with" in Paragraph 1 most probably means ______.
A. to get prepared to do
B. to get along well with
C. to try to complete
D. to be very good at
In addition to breathing with its lungs, an adult frog has the ability to breathe through
A. spout
B. gills
C. skin
D. tongue
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