如果要组织召开业主大会会议，业主委员会应当在召开业主大会会议（）前发布公告。
A.10日
B.15日
C.20日
D.30日
参考答案：B
压缩后能产生一个电视质量的视频和音频压缩的标准是( )。
A．JPEG
B．MMX
C．CCITT
D．MPEG
根据汉语提示完成句子，每空一词。
l. We all _______ _______ (属于) the People's Republic of China.
2. Many schools are teaching Japanese as a foreign language _______ _______ (代替) English.
3. China will become as strong as America _______ _______ _______ _______ _______
_______ _______. (到21 世纪中期)
4. China makes a great progress _______ _______ _______ (最近几年)．
5. Maths _______ _______ ( 联系着) physics and chemistry.
6. He paid attention to the test _______ _______ _______. (一直)
7. Wang Hong needs to _______ _______ _______ _______ (下大力气) to improve his English.
8. He is a clever boy, he has _______ _______ _______ (擅长)maths.
