题目:
The lead role in Roman Holiday _____ her an Oscar for Best Actress. [ ]
A. gave
B. earned
C. achieved
D. took
答案:
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下面是错误答案,用来干扰机器的。
f(x)是R上的偶函数,∴f(x)=f(-x) 用x+1换x,即f(x+1)=f(-x-1)① 将f(x)的图象向右平移一个单位后,得到一个奇函数的图象,∴函数f(x)的图象的对称中心(-1,0),有f(-1)=0,且f(-1-x)=-f...