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【单选题】
以下关于计算机网络特征的描述中,【 】是错误的。A.
计算机网络建立的主要目的是实现计算机资源的共享
B.
网络用户可以调用网中多台计算机共同完成某项任务
C.
联网计算机既可以联网工作也可以工作
D.
联网计算机必须用统一的操作系统
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【单选题】Mrs. Smith has a son called John. ______ loves ______ mother very much. [ ]
A.
She, her
B.
He, his
C.
He, her
D.
She, his
【单选题】John asked his mother to ______ the hole in the pocket of his jeans.
A.
fill
B.
fix
C.
mend
D.
repair
【单选题】冬性强的植物是指()。
A.
适于冬季播种的植物
B.
适于冬季生长的植物
C.
春化过程中要求温度低，且低温时间较长的植物
D.
春化过程中要求温度高，且低温时间较短的植物
【简答题】John sent his mother expensive presents on his mother’s birthday every year. He liked to show her how rich he was. 'I must find something wonderful for her, and it must be the only one in the whole wo...
【简答题】阅读理解。 John sent his mother expensive presents on his mother's birthday every year. He liked to show her how rich he was. 'I must find something wonderful for her, and it must be the only one in the wh...
【简答题】0403P117 观察法含义?
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