高考英语30分钟专题突破（17）：
名词性从句
1. Obama was elected president of the USA is a big success for the blacks in America．
A．不填 B．That C．What D．As
2. _____ seems strange to us is_____ she can sing so many English songs beautifully．
A. What; that B. It; why C. That; how D. It; that
3. My mother made a promise ________ I passed the examination, she would buy me an MP4．
A． that B．that if C．if that D. that whether
4. There is a common belief among them ___rubbish can and should be put to good use .
A. which B. if C. whose D. that
5. __ has been mentioned above, continued chairman after he took a sip of coffee, ____ the project must be carried out before spring flood comes.
