全程陪同导游员、地方陪同导游员、旅游团领队构成的导游服务集体协作共事的前提条件是(

如图所示，电源两端电压不变如图3所示的四个电器中，灯丝电阻不变．将滑动变阻器的滑片P置于中点，闭合开关S后如图所示的四个电器中，各电表的示数和灯泡的发光均正常．现将滑动变阻器的滑片由中点向右移动．则（　　）

A．灯泡L变亮

B．电压表V示数变大

C．电流表A₁示数变大

D．电流表A₂示数变小

光绪帝利用康有为、梁启超进行“百日维新”，希望借此挽救即将衰亡的大清王朝，也使自己避免成为亡国之君，但最终还是失败，其主要原因是

A．“百日维新”所实行的措施违背潮流

B．帝国主义列强的干涉和破坏

C．以慈禧太后为首的顽固派的反对

D．袁世凯的暗中告密

阅读理解。

     From 1964 to 1978, Dazhai, with a population of 500, was the most famous village in China. Millions

of Chinese came to the Shanxi village to visit its terraced fields (梯田) and "splendid" irrigation systems.

     It was not until 1978 when Guo Fenglian, head of the village, paid a visit to the US that China's model

village found how far it had fallen behind those in developed countries.

     "I was astonished at their modern equipment in harvesting, which could even separate big tomatoes

with small ones," said Guo. "American farmers' life quality also impressed me a lot. Every day they had

two cups of milk, which is something we don't have even m our wildest dreams."

     "We have to learn their advanced technology and administration for our own development," said then

first Deputy Prime Minister Deng Xiaoping who was planning China's reform and opening up policy then.

"Through opening our doors, we would not only take advantage of foreign funds (资金), but also create

job opportunities and cultivate (培养) talents."

     In 1978 Japanese electricity giant Panasonic (松下) came 'to China as the first foreign business to invest

(投资) here and its success attracted other world brands into exploring the Chinese market. So far China

has for 15 years taken in the world's second biggest foreign investment, following the US, to help set the

country in a fast growth.

     However, China's 30-year road of reform was not always smooth. Doubts on the reform began to rise

at the end of the 1980s as many people worried the country would turn to capitalism.

     "The criterion for our judgment is whether it helps develop socialist productive forces, whether it helps

increase the overall national strength of a socialist country, and whether it brings about better living standards,"

said Deng.

     "China's reform and opening up is a unique success story. It has brought benefit to both China and the

world," said William Keller, chief manager of a Swiss pharmaceutical (制药的) company.

1. Dazhai was not famous for _____. [ ]

A. the wonderful irrigation systems

B. its terraced fields

C. its modern equipment

D. the farmer's life

2. Guo Fenglian was _____ at the sight of the modern equipment in harvesting when she visited the US

    in 1978. [ ]

A. shocked

B. delighted

C. excited

D. attracted

3. _____ was the first big country to invest in China. [ ]

A. America

B. Japan

C. Swiss

D. Panasonic

4. Many people have doubts about the reform _____.[ ]

A. in 1978

B. in 1980

C. in 1981

D. at the end of the 1980s

5. According to remarks by Deng, which one is NOT the criterion for judging the success or failure of our work in various fields? [ ]

A. Whether it helps develop socialist productive forces.

B. Whether it strengthens the overall capacity of the country.

C. Whether it brings about better investment and more profit.

D. Whether it improves the peoples living standards.

病历摘要：患者男性，24岁。从三楼坠下，脑外伤、下颌骨粉碎性骨折。急行下颌骨固定，术后，在ICU病房观察治疗。3日后，感腹痛、穿刺腹腔有淤血。查体：一般情况差、神志恍惚、头部肿大、口不能张开、心率120次／min、律齐、两肺呼吸音正常、血压130／80mmHg。B超提示：肝脏右叶脏面破裂，再急行剖腹探查。

该患者气管内一次吸痰的时间应限制在（）

A.2秒以内

B.5秒以内

C.10秒以内

D.20秒以内

E.30秒以内

F.40秒以内

G.50秒以内

沉积岩是在地壳层含氧气、二氧化碳、水和有机质的环境下形成的，故沉积岩和火成岩的化学成分有一定的（）。