Always check the reliability of the sources before citing them.

在引用来源之前，务必检查其可靠性。

同一单元的其他句子

• The internet has changed the way we communicate with each other.互联网改变了我们相互交流的方式。
• Do you often use the internet to search for information?你经常使用互联网查找信息吗？
• Students should not spend too much time on the internet every day.学生每天不应该花太多时间上网。
• Please turn off the computer after you finish your online work.完成在线工作后请关闭电脑。
• The internet makes it easy for people to stay connected with friends.互联网使人们与朋友保持联系变得容易。