题目内容
What other thing were invented in ancient China _______ the compass（指南针）?
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The telephone, which _______ by Bell in 1876, was a great improvement on the telegraph.
There are in China over fifty nationalities（民族）_______ the Hans.
以下程序的输出结果是（ ）#includevoid fun(int x, int y, int z){ z=x*x+y*y; }void main(){ int a=31;fun(5,2,a);printf("%d",a); }
请问整车故障等级分为几级( ) ( )
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