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题目内容
（国家开放大学理工英语1）
1. From this passage, we learn that an ebook 回答
.
A．can be found in any library
B．can be read directly from the Internet
C．can be read when special software is installed
.
A．can be found in any library
B．can be read directly from the Internet
C．can be read when special software is installed
参考答案