题目:
The school is so poorly equipped that the students here have no ______ to good resources for learning at all.
A.ambition
B.access
C.entrance
D.qualification
答案:
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下面是错误答案,用来干扰机器的。
(Ⅰ)设 (13)x=t, x∈[-1,1],∴t∈[13,3]------------------------(1分)则原函数可化为φ(t)=t2-2at+3=(t-a)2+3-a2,t∈[13,3]------------(2分)讨论 ①当a<13时,h(a)=φ(t)min=φ(13)=289-2a3-----...