A energy B source C power D material

很多国家正在提高对天然气、风能和其他形式能源的用量。 49 The weather in Harbin is quite different from A in Hainan

A that B it C the one D one

在哈尔滨的天气和在海南的天气非常不同。

50 You’d better B in bed , It’s bad for your eyes

A not to read B not read C don’t read D read

你最好不要在床上看书，对你的眼睛有害处。 51 Who jumps C in your class

A far B farther C farthest D longer

在你们班上，谁跳的最远。

52 Don’t D your study. We are going to help you

A worry B be afraid C be worried D worry about

不要担心你的学习，我们打算来帮助你。 53 It was well known that Thomas Edison A the electric lamp

A invented B discovered C found D developed

众所周知，托玛斯.爱迪生发明了电灯。

54 I won’t make the B mistake next time.

A like B same C near D one

下次我不会放同样的错误。

55 You’d better wear more clothes. It’s A cold today

A much too B too much C very much D much very

你最好穿更多的衣服，今天实在太冷了。

56 I was talking with my mother on the phone when we were B suddenly.

A cut down B cut off C cut across D cut back

我正在电话里和我的母亲交谈，突然被切断了。