听力原文：CpL＝(μ-TL)/3σ＝2800/3000＝0.93。
某种规格的绝缘材料，规定其击穿电压不低于1200V，已知样本均值x＝4000V，样本标准差s＝1000V，则该工序的过程能力指数CpL约为()．
A. 0.9973
B. 0.9545
C. 0.6827
D. 0.93
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Liberia's finances were given the greatest boost by______.
A. grants made by Harvey Firestone
B. Firestone's decision to grow rubber there
C. the payment of all debts by the United States
D. purchases of rubber by the United states
The Chinese thought that the sun spent the night______.
A. in the branches of a tree
B. above the sky
C. in a western valley
D. on earth
以下有关数组定义的语句序列中，错误的是______。
A. Static arrl(3) rrl(1)=100 arrl(2)="Hello" arrl(3)=123.45
B. Dim arr2()As Integer Dim size As Integer Private Sub Command2_Click() size=inputBox('输入:") ReDimarr2(size) End Sub
C. OptionBase 1 Private Sub Command3_Click() Dim arr3(3) As Integer End Sub
Dim n As Integer Private Sub Command4_Click() Dim arr4(n)As Integer End Sub
在400米环形跑道上，A、B两点最近相距100米(如图)。甲、乙两位运动员分别从A、B两点同时出发，按逆时针方向跑步，甲每秒跑9米，乙每秒7米，他们每人跑100米都停5秒，那么追上乙需要多少秒？()
A. 70
B. 65
C. 75
D. 80
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