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【单选题】
What prompted Sequoyah to develop his alphabet?A.
People were writing things about him that he couldn’t read．
B.
He wanted to become famous．
C.
After his hunting accident，he needed something to keep him busy．
D.
Future generations．
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【单选题】My job could be at ________ if I make an error of judgment.
A.
danger
B.
stake
C.
loss
D.
threat
【单选题】隐形眼镜的洗液主要成分是过氧化氢（H 2 O 2 ），有关过氧化氢的说法中正确的是
A.
过氧化氢由氢气和氧气组成
B.
过氧化氢由氢元素和氧元素组成
C.
过氧化氢由1个氢分子和1个氧分子构成
D.
过氧化氢由2个氢原子和2个氧原子组成
【单选题】隐形眼镜的洗液中含有过氧化氢．在过氧化氢（H 2 O 2 ）和水（H 2 O）两种物质中，相同的是（ ）
A.
氢分子数
B.
氢的质量分数
C.
相对分子质量
D.
组成元素
【简答题】I worked for an investment company in New York City. When I had a baby last year I quit my job and became a freelance. It was great. I could work better at home, because there were no distractions. No...
【简答题】Many years ago ,l was working at my job at a community college when a homeless woman came in. She began as she lay on one of the sofas in the student rest room. , she wasn't well. Without thinking too...
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