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【单选题】
以下4个,完全正确的是 ( )A.
#include ; main() { int a=2,b=3,c; printf(" c=%d\n",a+b); }
B.
#include main(); { /*源程序代码为*/ printf(" hello world !\n"); }
C.
#include main() { int a=2,b=3,c; printf(" c=%d\n",a+b) }
D.
#include main() { /*源程序代码为*/ printf(" hello world!\n"); }
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反馈参考答案：
举一反三
【简答题】如果有多个选项,比如21和2都对,则答:“2和21”(将小的数字写前面大的数字写后面,中间用“和”字连接)
【单选题】What devices have been installed in Beijing airport?
A.
Test paper is used to pick up particle on the surface of the luggage.
B.
Explosive-detection devices have been installed at the entrances in Beijing Airport.
C.
Passengers are urged to arrive at airports much earlier than before.
参考解析：
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