II. Choose the correct answers after reading the passage.
1. What did the group do first in the morning? They .
A. went into the forest slowly
B. left the chimp family sleeping in a tree
C. observed the family of chimps wake up
D. helped people understand the behaviour the chimps
网友回答
A. went into the forest slowly
B. left the chimp family sleeping in a tree
(答案→)C. observed the family of chimps wake up
D. helped people understand the behaviour the chimps
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