设随机变量X与Y服从正态分布，X～N(μ，42)，Y～N(μ，52)，记p1＝P｛x≤μ－4)，p2＝｛y≥μ＋5｝，则()．
A. 对任何实数μ，都有p1＝P2
B. 对任何实数μ，都有p1＜p2
C. 只对μ的个别值，才有p1＝p2
D. 对任何实数μ，都有p1＞p2
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The word arduously in the passage is closest in meaning to
A. with skill.
B. regardless.
C. without rest.
D. temporarily.
已知函数f(x)在区间(1－δ，1＋δ)内具有二阶导数，f〞(x)＜0，且f(1)＝fˊ(1)＝1，则()．
A. 在(1－δ，1)和(1，1＋δ)内均有f(x)＜x
B. 在(1－δ，1)和(1，1＋δ)内均有f(x)＞x
C. 在(1－δ，1)内f(x)＜x，在(1，1＋δ)内f(x)＞x
D. 在(1－δ，1)内f(x)＞x，在(1，1＋δ)内f(x)＜x
The word accumulated in the passage is closest in meaning to
A. inspected.
B. discovered.
C. collected.
D. maintained.
The word modification in the passage is closest in meaning to
A. adjustment.
B. invention.
C. growth.
D. condition.
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