Under the system of federalism, The states don’t enjoy any power that the federal government does not have.()
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Under the system of federalism, The states don’t enjoy any power that the federal government does not have.()
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第1题：
Don't read _______ the sun. It's bad ______ your eyes.A.under,for
B.in,to
C.in,for
D.under,to
正确答案:C -
第2题：
We _____ like coffee before_____ all.A.don’t … at
B.didn’t … at
C.didn’t … in
D.don’t ...in
答案：B
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第3题：
Acustomerrequirestwo12XloopsontheirnewPOWER7system.Whatisthesmallestsystemthatwill supporttwoloops?()A.Power710
B.Power720
C.Power730
D.Power740
参考答案：D
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第4题：
There are ______ books in your bag. But there aren’t ______ pens in it.A、some, some
B、any ,some
C、some, any
D、any,any
参考答案：B
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第5题：
请将下面程序补充完整。
public class PowerCalc{
public static void main(String[]args){
double x=5.0;
System. out. println(x+"to the power 4 is"+power(x, 4));
System. out. println("7. 5 to the power 5 is"+power(7.5, 5));
System. out. println("7.5 to the power 0 is"+power(7.5, 0));
System. out. println("10 to the power -2 is"+power(10, -2));
}
static double【 】 (double x, int n){
if(n＞1)
return x * power(x, n-1);
else if(n＜0)
return 1.0/power(x, -n);
else
return n==0 ? 1.0:x;
}
}
正确答案：【 】power
【 】power 解析：通过程序片段可看出，在main方法中调用了。power方法，所以需要在类中对power方法进行定义，否则编译会报错。下面的程序片段就是对power方法的定义。 -
第6题：
-- Ann is in hospital.
-- Oh, really? I __ know. I __ go and visit her.
A. didn’t; am going to B. don’t; would
C. don’t; will D. didn't; will
正确答案：D