患者，男性。胃大部切除术后第2周，进食20分钟后出现上腹饱胀、恶心、呕吐，并觉头晕、

10个月男孩，体重10kg，患腹泻中度脱水，该患儿体液丢失大约为

A．200ml

B．450ml

C．750ml

D．1200ml

E．13050ml

在基础施工时，要经常检查边坡情况，发现有裂缝或其它情况，要采取措施后才能继续作业

C

Today just as technology changed the face of industry, farms have experienced an “agricultural revolution”. On the farm of today, machines provide almost all the power.

One of the most important benefits will be the farm computer. A few forward-looking farmers are already using computers to help them run their farms more efficiently. The computers help them keep more accurate records so they can make better decisions on what crops to plant, how much livestock(家畜) to buy, when to sell their products, and how much profit they can expect. Many computer companies have been developing special computer programs just for farmers. Programs are being written for pig producers, grain farmers, potato farmers, and dairy farmers. In the future, farmers will be able to purchase computer programs made to their needs. Because of the growing importance of computers on the farm, students at agricultural colleges are required to take computer classes in addition to their normal agricultural courses. There can be no doubt that farmers will rely on computers even more in the future. While the old-time farm depended on horse power, and modern farms depend on machine power, farms of the future will depend on computer power.

Another technological advance which is still in the experimental stage is the robot, a real “mechanized hired hand” that will be able to move and, in some ways, think like a human being. Agricultural engineers believe that computer-aided robots will make shocking changes in farming before the end of the century. Unlike farmers of the present, farmers of the future will find that many day-to-day tasks will be done for them. Scientists are now developing robots that will be able to shear（修剪） sheep, drive tractors, and harvest fruit. Even complex jobs will be done by robots. For example, in order to milk their cows, farmers must first drive them into the barn, then connect them to the milking machines, watch the machines, and disconnect them when they are finished. In the future, this will all be done by robots. In addition, when the milking is completed, the robots will automatically check to make sure that the milk is pure. The complete change of the farm is far in the future, but engineers expect that some robots will be used before long.

49. Which sentence carried the main idea of the whole passage?

A. The first sentence of the third paragraph.

B. The first sentence of the second paragraph.

C. The first sentence of the first paragraph.   

D. The last sentence of the second paragraph.

50. According to the passage, computers can not help farmers decide _______.

A. how much money they can earn from their products

B. whether to plant a certain kind of crop

C. what livestock to raise       D. when to sell their products

51. Which of the following statements is true?

A. Farmers in the future will depend totally on computers.

B. Farmers mainly use machines on their farms at present.   

C.  Both computers and robots have been in use on today’s farms.

D. Students at agricultural colleges must take computer classes because they can do

nothing without the help of computers on today’s farms.

52. What is the best title for the whole passage?

A. Computer, Farmers’ Best Friend               B. Farmers in The Future

C. The Agricultural Revolution                    D. Computers and Robots

4，11，25，53，109，( )。

A．129
B．178
C．203
D．221

材料一：
2009年西南五省发生严重旱灾，给我国带来深重的灾难。水利工程在抗击西南干旱中发挥了巨大作用，不仅解决了广大群众吃水用水的困难，而且保证了及时播种、灌溉。在年年抗旱年年旱的背后，显示出农田水利设施也是“重旱区”，千年传统的“望天收”至今依然大范围存在。中国现有的18.3亿亩耕地中，尚有9.59亿亩是没有灌溉条件的“望天田”，已建成的8.67亿亩灌溉耕地，灌溉水利用率也只有46%。而且，自上世纪80年代以来，我国一直没有大规模地兴修农田水利建设。有些地区连维修的工作都减免了。很多渠道和水库或被泥沙拥堵，或被用来排放污水。在西南旱灾时大中型骨干水利工程保障了大中城市供水，保障了重要经济项目用水，保障了重旱区的主要水源供应，可见其重要性；小水窖、小塘坝等“小工程”也在干旱前期发挥了重要作用。但西南水利工程依然远远不足，大型水库和骨干水利工程很少，以贵州为例，全省中型水库仅34座，蓄水总量不到20亿立方米，而且水利工程并未受到充分重视。改革开放后，政府把水利投入的重点放在利益相关的城市防洪与大江大河工程上，与农业产出能力直接相关的农田水利建设投入却少之又少，管理日渐荒疏。
材料二：
按照“组建规范、产权明晰、水价合理、管理自主”的原则，江西省各地纷纷出台农民用水户协会组建实施办法。同时，江西省计划用3到5年时间，将省级以上“小农水”投资全部用于农民用水户协会所管理的工程项目建设。“必须调整思路，规划先行，走集中连片建设的路子，整体推进，建一片就得成一片。”江西省财政厅农业处副调研员曹忠明说。有关专家建议，国家应拨出专门经费建小农水，用以工代赈的方式，让那些村庄的农民在农闲时进行修建储水用水的沟塘渠堰。

结合给定材料，谈谈农田水利设施在应对重大旱灾时所起到的重要作用。