成都平原被称为“天府之国”得益于水利工程（　　）

【法制论坛】随着网络的迅速发展，互联网在人们的生活中成为了必需品。自从有了网络，人们便有了更多的自由空间，人们可以在各种网络空间、论坛上畅所欲言。有人认为：“网络是自由的，网民言论不受约束。”

请你谈谈对这一观点的认识。

B

    Scientists say life will be very different in 2050.

    First, there will be no TV channels (频道) in 2050. People will choose a program (节目) from a computer and watch it on TV. In 2050, we will get information from the computers only.

    Second, water will be a big problem in 2050. In many places, people won't have water to drink.

    Third, cars will use new and clean fuels (燃料) and they will go very fast. There will be a computer in every car. And the computers will control the cars and there won't be any accidents (事故).

下列词语中划线的字，每对读音都不相同的一组是（   ）