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【单选题】
将文本文件 test1.txt 更名为为 test2.txt ,下列命令( )可以实现。A.
cd test1.txt test2.txt
B.
mv test1.txt test2.txt
C.
rm test1.txt test2.txt
D.
cp test1.txt test2.txt
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反馈参考答案：
举一反三
【单选题】Lesson 3: 1. The writer _________________________.
A.
doesn't like buying postcards
B.
doesn't like receiving postcards
C.
doesn't like writing postcards
D.
doesn't like postcards
【单选题】The father was not happy when the writer was going to Israel because_____.
A.
it was not safe
B.
it was too far away
C.
he liked English
D.
he wanted the writer to go to England
【单选题】对感受器的一般生理特征，不正确的论述是
A.
感受器具有换能作用
B.
感受器仅对适宜刺激发生反应
C.
感受器对刺激能产生适应现象
D.
受到刺激时可产生感受器电位
E.
感受器加上其附属装置构成感觉器官
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