古代遮蔽在身前的皮质服饰称为（）。A、帘B、头巾C、帷帽D、韠

为了较准确测定氯酸钾完全分解产生氧气的体积，可进行发下实验：称取2.45g氯酸钾与适量二氧化锰混合，然后加热直至无气体放出．慢慢上下移到量筒，使量筒内外液面高度相同，读取量筒的气体体积．请完成下列空白：

（1）氯酸钾分解产生氧气的化学方程式______．

（2）测量气体体积时，可以将反应发生装置和收集装置中的气体冷却到室温再进行，则收集气体应选上图中的______装置．

（3）慢慢上下移到量筒，使量筒内外液面高度相同的目的是：______

（4）若这时氧气密度约为1.33g/L，应选用______规格的量筒（选填字母序号）

A、100ml   B、200ml     C、500ml     D、1000ml．

任务型阅读（共5小题，计10分）阅读下面短文，根据短文内容，完成下面表格中所缺的信息（共5小题，每小题2分，计10分）

Do you think it’s hard for you to learn English? Listening to English songs may be a fun way to learn. You might be thinking: Where can I find some online music? Well, there are plenty of places to listen to and download English songs.

Google music is a good website. It has about 350,000 songs for download. You can search by artist and song name. You can also search by criteria(标准). For example, if you want to find a slow song by a female singer, just choose “ female singer” and “slow” on the page. On Google music, you can read the lyrics to the songs as you listen.

Baidu MP3 is another big online music database(数据库). You can find some of the newest songs on Baidu and download them.

If you just want to listen to music, you can try www. aiting.com and www. haoting. com. They are two large online Mp3 players.

After you pick(挑选) the songs, you can start learning. Learning language from music is fun, so don’t think of it as work. You can listen on your way to school or before you go to sleep. Close your eyes and try to get the meaning of the songs.

小题1:There are _____________________________________ songs to download on Google music.

小题2:We can download English songs from ________________ and ____________________.

小题3:The ways of searching songs are ______________________________________

小题4:When we listen to songs, we can read the lyrics on__________________________________

小题5:The best title of the passage is _______________________________________

下列哪些方法可用于评价心肌存活（）

A.硝酸甘油介入⁹⁹Tc^m-MIBI心肌灌注显像

B.²⁰¹T₁再分布/延迟心肌显像

C.²⁰¹T₁再次注射法心肌显像

D.⁹⁹Tc^m-MIBI运动-静息隔日心肌显像法

E.⁹⁹Tc^m-MIBI心肌显像摄取比值测定

近年来，长江洪灾频繁发生，其主要自然原因是

①中游地区围湖造田②中下游地势低平③流域内降水丰沛

④上中游砍伐森林，破坏植被⑤支流众多，雨季涨水集中 [ ]

A．①②③

B．②③④

C．②③⑤

D．①③⑤

接近—接近冲突