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【判断题】
采用库函数系统调用可打开一个文件，二者使用方式略有区别，系统调用返回文件指针，库函数返回文件描述符。A.
正确
B.
错误
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【单选题】It is generally believed that ______a piece of field is, ______ it produces. [ ]
A.
the more fertile; the higher output of grain
B.
more fertile; more output of grain
C.
the fertile; t he higher output of grain
D.
the fertile; the more grain output
【简答题】Imagine an eco-conscious city where rooftops have been transformed into fertile, green gardens. It's a place where every home is equipped with a system that recycles valuable water resources. In this ...
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