Most of us lead a busy life. Driven by the “urgent() 小题5:Translate the underlined sentence into Chinese.
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使不等式对于一切实数恒成立的实数的取值范围为.使不等式 对于一切实数 恒成立的实数 的取值范围为
病例对照研究通过分析两组人群中_______的差别,来推断_______作为疾病的病因可能性
已知,又二次函数的图象是开口向上,其对称轴为的抛物线,当时,求使不等式成立的x的取值范围已知 ,又二次函数 的图象是开口向上,其对称轴为 的抛物线,当 时,求使不等式 成立的x的取值范围
完形填空。 On April 19, we were told to leave school and stay at home because of a new disease called完形填空。 On April 19, we were told to leave school and stay at home because of a new disease called SARS. We started an unusual holiday. It’s not very 1 for us to stay at home all day. I think going to school is much better than staying at home, although () D. know D. sad D. few D. visited D. pen D. never D. Nobody D. check