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【简答题】
Sometimes what appear to be problems (is, are) easily solved. 2. Joan is one of those people who (go, goes) out of their way to be helpful. 3. He is the only one of those boys who (is, are) willing to help others. 4. Attending on-campus concerts (is, are) part of the pleasure of college life. 5. To translate this into English (need, needs) hard work. 6. Living on that island for three months (was, were) an unforgettable experience for me. 7. Parking along the road (was, were) six heavy trucks. 8. He is not the only football fan in his family, so (is, are) his brother, sister, and his uncle.
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A.
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B.
good                
C.
well
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A.
正确
B.
错误
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A.
denied
B.
concluded
C.
doubted
D.
ensured
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A.
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B.
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C.
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D.
more friendier
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A.
friendly
B.
more friendly
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most friendly
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【单选题】小明做分析实验时,称了 0.0204g 的苯甲酸样品,准备用紫外可见分光光度计测定其含量。按照分析方法的原理来分,本次分析属于
A.
常量分析
B.
半微量分析
C.
化学分析
D.
仪器分析
【单选题】小明做分析实验时,称了 0.0204g 的苯甲酸样品,准备用紫外可见分光光度计测定其含量。按照试样的用量来分,本次分析属于
A.
常量分析
B.
半微量分析
C.
化学分析
D.
仪器分析
【简答题】已知函数f(x)= sin2x-2sin 2 x, (1)若点P(1,- )在角α的终边上,求f(α)的值; (2)若x∈ ,求f(x)的值域.
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