题目内容

Although he has looked for his dog ______, he hasn’t found it yet.

A. everywhere
B. nowhere
C. anywhere
D. somewhere

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One can live without money, but ______ can live without air.

A. someone
B. anyone
C. no one
D. one

下面代码的运行结果是（）。var str= "hello world" ;var str1=str.toUpperCase();var str2=str.toLowerCase() ;alert (str1) ;alert (str2) ;

A. "HELLO WORLD","HELLO WORLD"
B. "HELLO WORLD","hello world"
C. "hello worl","HELLO WORLD"
D. "hello world","hello world"

下列代码的运行结果是（）。var str= "hello monkey";alert (str.charAt(6));

A. m
B. o
C. 空
D. n

下列代码的运行结果是（）。var str="hello monkey ,hello tiger";alert (str.indexOf("o") );

A. 7
B. 4
C. 6
D. 17