下列事件是不确定事件的是（ ） A．某运动员在6秒时间内跑完100米 B．在图形
题型：选择题
问题：
下列事件是不确定事件的是（ ）
A．某运动员在6秒时间内跑完100米
B．在图形的旋转变换中，面积不会改变
C．掷一枚硬币，停止后正面朝上
D．抛出的石子会下落
题型：选择题
阅读理解。
Li Wei's College Dream
Li Wei, a 22-year-old young man is named "Strong Brother" by netizens (网友). He walked on his
knees all the way to the 2011 national college entrance examination (高考) room. He was born in a poor
family in Shanxi province. But unluckily, a traffic accident took away his legs when he was only 3 years
old. His life has changed since then. Without feet, he had to spend most of his time practicing walking
on his hands and knees. Everybody who sees Li Wei for the first time is surprised to see that he can
easily play tennis or climb up stairs without feet. Some people even think he still has feet, but has short
legs.
With hard work, Li Wei finished all his school study. In 2011, he became a college student in
Chongqing Normal University. Now he has been enjoying his college life. And he received a new
pair of artificial legs (假肢) from China Disabled Person's Federation(残联).
He likes the popular song which says"I know my future is not a dream, I will live happily for every
minute of my life. My future is not a dream. My heart moves with the hope…
1. What is the name that netizens give to Li Wei?
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2. How old was Li Wei when the traffic accident took away his legs?
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3. Can he walk or play sports without feet?
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4. When did he become a college student in Chongqing Normal University?
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5. What do you think of Li Wei from his story?
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