28．---- Tom, hurry up and there’s only 25 minutes left before the train leaves.

　 　---- Don’t worry, mum. I think I can _________ it.

　 　A．take　　 　　　　B．make　　　 　　　　C．do　 　　　　D．achieve

27．The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.

A．what　　　　　 B．which　　　　 　　C．that　　　 　　D．though

26．I failed again in the examination and only then ______ how much time I had wasted.

　 　A．I realized　　　 　B．I had realized　　 C．did I realize　 　D．had I realized

25．Many children，　　　　 　parents are away working in big cities，are taken good care of in the village．

A．their　　　 　　　B．whose　　 　　C．of them　　　 D．with whom

24．When he woke up, he found himself ________ to a tree, his mouth filled with a towel.

　 　A．tied　　 　　　　　B．tying　　 　　C．to be tied　　 　D．having tied

23．---- Would you mind if I used your computer?

　 　---- ________.

　 　A．Certainly, please do　　　　　　　 　　B．Never mind

　 　C．No, go ahead　 　　　　　　　　　　　　　　　　　 　　D．Yes, of course not.

22．It ______ less than a year before the 2010 Shanghai World Expo starts.

A．is　　　　　　　　　　　　　 B．was　　　　　　　　 C．had been　　　　　 D．will be

第一节：单项填空(共15小题；每小题1分，满分15分)

21．China has got a good 　　　　　for fighting against the flu with its careful and smooth organization．

A．reputation　　　 　B．influence　　 　C．impression　　 D．knowledge