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【单选题】
如希望查看上次输入的命令使用下列哪个键( )A.
向上箭头
B.
向左箭头
C.
PageUp
D.
backspace
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】就整个地球大气来说，受热能量的根本来源是太阳辐射，太阳辐射能被大气接收和转化的过程十分复杂，其加热大气的过程大致可以用图表示。读图完成题。 下列描述正确的是（）
A.
①——以长波辐射为主
B.
②——大约为①辐射量的19%
C.
③——是加热大气的主要直接热源
D.
④——多云的夜晚辐射能力减弱
【单选题】The police including an officer searching for the murderer in the area the other day.
A.
was
B.
are
C.
were
D.
is
【简答题】1907 年,蒙台梭利应邀办起了 _______ 。
【单选题】The United States today is the______largest country in size in the world.
A.
second
B.
third
C.
fifth
D.
fourth
【单选题】'Wanted by the FBI.' To the murderer, or the bank robber, these are the most frightening words in the world. When the criminal (罪犯) hears them, he knows that six thousand trained persons are after him...
A.
not at all useful
B.
very helpful for a while
C.
necessary for staying free
D.
important and useful
【单选题】Never before______so rapidly developing as it is today.
A.
has our country been
B.
has been our country
C.
our country has been
D.
our country been has
【单选题】就整个地球大气来说，受热能量的根本来源是太阳辐射，太阳辐射被大气接收和转化的过程十分复杂，其加热大气的过程大致可以用下图表示。读图完成题。 下列描述正确的是（）
A.
①——以长波辐射为主
B.
②——是加热大气的主要直接热源
C.
③——多云的夜晚辐射能力减弱
D.
④——是加热大气的主要直接热源
【单选题】The house______ ready today but there has been a builders' strike it is still only half finished.
A.
was to be
B.
was to have been
C.
were to be
D.
should be
【简答题】剪贴板只能存放_______一次的剪贴内容。也就是说,前一次的内容就自动被_______。
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