（75） ● means the conducting of business communication and transaction over network and thr

● （75） means the conducting of business communication and transaction over network and thr

● （75） means the conducting of business communication and transaction over network and thr

（75） ● means the conducting of business communication and transaction over network and thr

Our experiment was conducted under optimal condition. The underlined part means ______.（20

By mentioning Bernard Shaw and Thomas Edison, the author means to support the idea thatA．o

Our experiment was conducted under optimal conditions. The underlined part means ______A．p