( )在爆炸危险场所，如有良好的通风装置，能降低爆炸性混合物的浓度，场所危险等级可

以下哪项措施不能有效提高系统的病毒防治能力______。

A．安装、升级杀毒软件
B．下载安装系统补丁
C．定期备份数据文件
D．不要轻易打开来历不明的邮件

背景材料:“身体发肤受之父母，母亲有难我一定要为她做点什么。”22岁的广州赴美留学生彭斯，听闻母亲慢性重型肝炎晚期需进行肝移植手术，马上放下学业，从美国回到广州，毅然割下自己60%的肝脏移植给母亲，挽回了母亲的生命。近日，这位80后小伙“割肝救母”的反哺孝心行为在网络上感动了很多网友。 “割肝救母”的彭斯被评为2011年度“广东十大新闻人物”。

请说说你对彭斯“割肝救母”事迹的理解。（不少于三点）（6分）

女性，28岁，农民，3个月来咳嗽、咳少量白痰，伴乏力、低热、食欲下降，体重减轻6kg，月经不规律。体检发现左颈部可及2个黄豆大小淋巴结，质软、活动。胸片发现右上肺不均质片状阴影及肺门钙化影。

如果多次痰涂片均未找到抗酸杆菌，选用下列哪项最有助于该患者的诊断

A．给予异烟肼十链霉素+乙胺丁醇治疗，观察疗效

B．胸部CT、磁共振成像检查

C．血沉、WBC计数及分类

D．抽血查结核菌抗体、结核菌PCR检测

E．PPD皮内试验、痰结核菌及细菌培养

第二部分阅读理解（共两节，满分40分）

第一节(共15小题；每小题2分，满分30分)                        

Coca Cola is an American icon – and sometimes seen as a symbol of the country’s economic right. But one of the world’s famous companies will play a different role during the 2008 Olympic Games: promoting Oriental (东方的) culture to the world.

The man who is in charge of the project couldn’t be more suited for the job. The American has lived in the country for about 15 years, speaks fluent Chinese, and considers Beijing his hometown. David Brooks, vice-president and general manager of the Olympics Project Group of Coca Cola China, who has lived in the country for more than a decade, said: "We are working very hard to create a lot of special different kinds of items that are very Oriental in character and have a strong Oriental identity. "There is a lot of curiosity around the world about the country and about Oriental culture. So, we think we also have a role and opportunity to show people so many things."

Coca Cola has launched its logo(标识) with the Beijing Games, featuring kites and lucky clouds, traditional elements in the Oriental culture. Brooks considers it a good start. "We are doing a lot of similar programs, and in the next 570 days or so, as we count down to the Games, you will see more examples with strong Oriental spirit and identity."

He certainly has a sense of history. "The Olympic spirit, which is an ancient spirit from over 2,000 years ago, is alive. It still lives through the Olympic Games in the idea of balancing the body and mind, and doing the best," said Brooks, who has been to three Games. "It's like a big family celebrating together. I think all the members of my team and I feel it is a special honor to be involved in the Games."

1．The underlined word “icon” in the first sentence can be replaced by “       ”.

A．sign  B．image       C．portrait     D．picture

2．What can we know about David Brooks from the passage?

A．He is vice – president and general manager of Coca Cola Corporation.

B．He is living in Beijing with his family.

C．He has mastered at least two languages.

D．He is especially curious about oriental culture.

3．Why will Coca Cola cooperate (合作) with the 2008 Olympic Games?

A．Because it is a good chance to let the world understand Oriental culture.

B．Because there is a lot of curiosity around the world about China and Oriental culture.

C．Because it contains a lot of enormous business opportunities.

D．Because it will promote Oriental culture to the world.

根据《国家电网公司用电信息采集系统运行维护管理办法》，抄表数据应定期进行现场复核，将现场抄表数据与采集数据进行比对，专变用户复核周期不超过（）个月。

A.1

B.3

C.6

D.12