在Excel中第二列第三行单元格使用标号表示为C4。 ()
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Why did the writer say that Chicago was a very big city？
A. Because it was impossible (不可能的) for him to happen to know the man's friend.
Because he knew the man's friend.
C. Because he didn't want to look for the man's friend.
【B6】
A. ordinary
B. interesting
C. wonderful
What topics does the professor mainly discuss？ Click on two answers.
A. How predators find, catch, and eat prey
Behaviors that help prey avoid predators
Changes in predator and prey populations
Defensive coloration in prey animals
What point does the professor make about the snow that forms a glacier？
A. It is conserved.
B. It is light and fluffy.
C. It is denser than ice.
D. It is very dirty.
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