如图在水平放置的书架上，如图所示，并排立放着10本同样的书，如果取走5本，则桌面

从事招标代理业务并提供相关服务的社会中介组织是( )。

A．招标代理机构

B．招标代理组织

C．招标方案

D．招标投标机构

男，58岁。上前牙反复肿痛4年，要求诊治。年轻时左上前牙有洞曾在医院治过。检查见大面积黄白色充填物边缘发黑，叩痛（±）；牙尖部折断牙冠变色，叩痛（-），间唇侧龈近根尖部有瘘管口。

提示：根管治疗完成，根管充填的质量满意。为了观察确切的疗效，最早复查的时间应为（）

A.3周

B.6个月

C.12个月

D.24个月

E.36个月

根据以下资料，回答以下各题。

医疗机构诊疗和入院情况统计表 年份 诊疗人次(亿次) 入院人数(万人) 合计 医院 卫生院 合计 医院 卫生院 1980 25.53 10.53 … 2247 2247 … 1985 24.11 13.11 11.00 4331 2560 1771 1990 25.59 14.94 10.65 5140 3182 1958 1991 26.14 15.32 10.82 5292 3276 2016 1992 25.69 15.35 10.34 5222 3262 1960 1993 22.05 13.07 8.98 4921 3066 1855 1994 22.42 12.69 9.73 4992 3079 1913 1995 21.90 12.52 9.38 5033 3073 1960 1996 22.39 12.81 9.58 5023 3100 1923 1997 21.57 12.27 9.30 5044 3121 1923 1998 21.25 12.39 8.86 4995 3238 1759 1999 20.82 12131 8.51 5073 3379 1694 2000 21.23 12.86 8.37 5297 3584 1713 2001 20.87 12.50 8.37 5464 3759 1705 2002 21.45 12.43 7.30 5991 3997 1654 2003 20.96 12.13 7.10 6092 4159 1626 2004 22.03 13.05 7.03 6676 4673 1621 2005 23.05 13.87 6.99 7184 5108 1641

表中所列年份中卫生院接受诊疗人次最大值与最小值的差额是( )。

A．3.54亿

B．4.01亿次

C．2.09亿次

D．2.08亿次

E

Last year, Shanghai-born Charles K. Kao and two North American scientists got the 2009 Nobel Prize(诺贝尔奖) in Physics together. Their work made the Internet come into a new age.
Kao, 77, was born in Shanghai in 1933. He is famous for finding out how to transmit (传输)light signals(信号) over long ways through glass fibers (玻璃纤维) as thin as a human hair. His work makes the Internet information transmit faster around the world. Kao was vice chancellor(副校长) of the Chinese University of Hong Kong from 1987 to 1996. He doesn’t work, and lives in Hong Kong now.
The Chinese people were pleased to learn the good news. "The people of Hong Kong and I send our congratulations to Kao on receiving the prize... Kao is also a true gentleman. We are greatly proud to have such an excellent person in Hong Kong. "Zeng Yinquan once said.
Willard Boyle, a Canadian American, and George Smith of the United States got the other half of the prize.

How many scientists got the 2009 Nobel Prize in Physics together ( )

A．One.

B．Two.

C．Three.

D．Four

有关乳酸循环的描述，错误的是（）

A.可防止乳酸在体内堆积

B.最终从尿中排出乳酸

C.使肌肉中的乳酸进入肝脏异生成葡萄糖

D.可防止酸中毒

E.使能源物质避免损失