Nowadays many people can’t live ______ a mobile phone.
A. with
B. without
C. from
D. on
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Money doesn’t mean ______.
A. something
B. anything
C. everything
D. nothing
Although he has looked for his dog ______, he hasn’t found it yet.
A. everywhere
B. nowhere
C. anywhere
D. somewhere
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"