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如果实数 满足条件 ，那么 的最小值为 .
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举一反三
【单选题】--- A ________ is one who comes to see someone or something.
A.
visitor
B.
receptionist
C.
guest
D.
secretary
【简答题】回答第19题。
【简答题】纪昌学射 甘蝇是古时候的一位射箭能手。他只要一拉弓射箭,将箭射向,就应声而倒;将箭射向天空飞翔着的飞鸟,飞鸟就会顷刻间从空中坠落下来。甘蝇的学生叫飞卫,他跟着甘蝇学射箭,本领超过了他的老师甘蝇。 有一个名叫纪昌的人,跟着飞卫学射箭。飞卫很严肃地对纪昌说: “ 你要先学会不眨眼,做到了不眨眼后才可以谈得上学射箭。 ” 纪昌回到家里,仰面躺在他妻子的织布机下面,两眼一眨不眨地直盯着他妻子织布时...
【单选题】Jobs exist, but they are not ________ for someone like you.So, I'm afraid we will not be able to offer you the job. [ ]
A.
suitable
B.
necessary
C.
possible
D.
comfortable
【单选题】听力原文：M：Excuse me，could you tell me how to find the Registration Office? Someone told me it was on this floor but it doesn't seem to be． W：Maybe you should try someone outside．I'm not the best one to a...
A.
She isn't sure about where things are on campus.
B.
The man should not ask the registration office.
C.
The registration is outside of the building.
D.
The people outside are very good to ask.
【简答题】纪昌跟()学射箭的。
【单选题】If someone (happens to call) while I'm (out), please have (them) leave a message (for me).
A.
happens to call
B.
out
C.
them
D.
for me
【单选题】I'm sure someone will agree to give up ________ opportunity.
A.
someone's
B.
their
C.
his
D.
her
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