髂棘间径正常值为（） A.23～26cm B.25～28cm C.18～20cm D

病毒性肺炎和支原体肺炎的共同特点是（）。

A.病变主要发生在肺间质

B.易发生出血性肺炎

C.肺泡表面易形成透明膜

D.上皮细胞可融合成巨细胞

E.以中性粒细胞浸润为主

子涵根据燃烧红磷测定空气中氧气含量的实验原理，认为可用木条燃烧产生的木炭代替红磷测定空气中氧气的含量，并按如图装置进行实验．

①依据的实验原理是______．

子涵检查装置气密性后，将盛有足量红热木炭的燃烧匙迅速伸入集气瓶中，并把塞子塞紧，待红热的木炭熄灭并冷却至室温后，打开弹簧夹，并未发现倒吸现象．经过认真分析，

子涵发现实验失败的原因是（答一条）______．

②子涵将集气瓶中的细沙改为______溶液，重复上述①实验，有倒吸现象．子涵还发现倒吸的水量未达到集气瓶内原剩余容积的

1

5

．原因可能是（答一条）______．

③子涵反思上述实验的探究过程后认为：用燃烧法测定空气中氧气含量的实验时，在药品的选择或生成物的要求上应考虑的是（答一条）______．

DJs (disc jockeys) are the people who play and present music on the radio, or in nightclub. A VJ (video jockey) is a person who introduces music videos on television.

VJs were first seen on television in the early 1980s when MTV went on the air. As MTV caught on, and the audience for music videos expanded, a variety of other music video channels started broadcasting. In addition to rock music, there were channels for people who were into alternative kinds of music, such as country music, light rock, and R & B, and all of these channels needed VJs. By the 1990s, international music video channels like Channel V in Asia and VIVA in Europe had started.

The VJs for the new international stations had to be chosen carefully. Although some VJs did shows focused on small audiences and showed mostly local content, other VJs presented shows for international viewers. These VJs, and the material they presented, needed to be popular in several different cultures.

One successful international VJ in Asia is Asha Gill. She is from Malaysia, but parents and grandparents are from India, France, and England. She speaks three languages and has fans across Asia, from Japan to the United Arab Emirates.

Another VJ who has made a big hit in Asia is Lili. She is actually a computer-animated VJ on MTV Asia. An actress wearing special computer equipment makes Lili move like a puppet. The actress also talks for Lili, and her shows can be seen in five languages.

When asked what makes a good video jockey, many successful VJs have given similar answers. To be a good VJ you need to know a lot about music, you need to be funny, and you can’t be shy.

小题1:What is the reading mainly about?

A．how to become a VJ

B．the most popular VJ today

C．the differences between DJs and VJs

D．some general information about VJs小题2:What kind of music did the first VJ probably introduce?

A．classical

B．rhythm and blues

C．rock and pop

D．country小题3:What do Channel V and VIVA have in common?

A．They are both owned by MTV.

B．They are music video channels in Asia.

C．They do not use VJs to introduce the music.

D．They have viewers in more than one country.小题4:Which is NOT true about Asha Gill?

A．She speaks more than one language.

B．Her family were all born in Malaysia.

C．She’s popular in quite a lot of Asian countries.

D．She is a successful VJ.小题5: Which of the following does the passage NOT mention as being important for someone who wants to be a VJ?

A．speak many different languages

B．listen to a lot of music

C．talk easily with different people

D．being able to make people laugh

高炉烘炉前制作铁口泥包的作用是防止烘炉时烧坏铁口（）。

驾驶中疏于观察表现为与他人闲谈、接打手机、东张西望和其它影响安全驾驶的行为。