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【简答题】
他放弃了跳远开始从事长跑。
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【单选题】—What does Mr. Chen look like? —__________.
A.
He has short hair, a long face and big eyes
B.
He is 50 years old
C.
He is from Beijing
【简答题】阅读短文，在相应栏中打“√'。 My friend is Mike. He is a boy. He is tall and strong. He has short hair. He likes sports. Amy is my friend, too. She is a girl. She's short and thin. She has long hair. She likes pain...
【简答题】读句子，画人物。 My friend is a boy. He's thin. He has short hair. He has a big nose and a big mouth. He has big eyes and ears.
【多选题】下面所列方程属于二阶齐次线性微分方程的是( ) (1) (2) (3) (4) (5) (6)
A.
（1）
B.
（2）
C.
（3）
D.
（4）
E.
（5）
F.
（6）
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