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【单选题】
When I got up this morning, the sun ________ brightly.A.
shines
B.
is shining
C.
was shining
D.
shined
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Listen to a long conversation and choose the best answer to each question you hear. B1-U6_3_2.mp3: Q: Why did the woman decide to do a triathlon?
A.
Because she did it in college.
B.
Because she wanted to be tough.
C.
Because her sister did it and liked it.
D.
Because her sister said it was good for her.
【简答题】深度为5的二叉树至多有 个结点
【简答题】（2009?重庆）下列物质中碱性最强的是（ ）
【单选题】B1-U6_3_3_1.mp3: Q: What is the ratio of positive to negative emotions that can make a person happier?
A.
01:03
B.
03:01
C.
01:10
D.
10:01
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