下列物质的转变，不能一步实现的是 A．KCl → KNO3 B．Fe(NO3)2

2009年，国家财政支农资达6000亿元以上，国债和预算内资金用于农村建设的比重要高于上年，其中直接用于改善农村生产生活条件的资金有大幅度增长，保证了新农村建设资金来源。中央指出，要巩固农村税费改革成果，全面推进农村综合改革，基本完成乡镇机构、农村义务教育和县乡财政管理体制等改革任务。要深化农村金融体制改革，规范发展适合农村特点的金融组织，探索和发展农业保险、改善农村金融服务。要继续完善现有农业补贴政策，保持农产品价格的合理水平，逐步建立符合国情的农业支持保护制度。

结合材料，分析国家如何利用财政、税收手段促进农村经济发展。（10分）

防渗土工布特点（）。

A、最大特点是经线与纬线的交叉点不弯曲，各自处于平直状态

B、用捆绑线将两者捆扎牢固，可全面较均匀同步，承受外力，分布应力

C、以玻璃纤维为增强材料，通过与短纤针刺无纺布复合而成的新型土工材料

D、利用土工布良好的透气性和透水性，使水流通过，有效的截留砂土流失

B2B保付业务中的资金流动过程包括支付和实付两个环节。（）

Bad teeth can be painful -- and worse. They can even be deadly. Infections (感染) of the gums (牙龈) and the teeth can cause bacteria (细菌) to go into the blood system. Those bacteria can increase the chance of a heart attack and worsen the effects of other diseases. And adults are not the only ones at risk.

For example, in 2007, doctors in the Washington area said a boy died when a tooth infection spread to his brain. They said it might have been prevented had he received the dental care (牙齿保健) he needed. He was twelve years old.

Experts at the National Institutes of Health say good dental care starts at birth. Breast milk, they say, is the best food for the healthy development of teeth. Breast milk can help slow the growth of bacteria and acid production in the mouth.

But dentists say a baby's gums and early teeth should be cleaned after each feeding. Use a cloth with a little warm water. Do the same if a baby is fed with a bottle. Experts say if you decide to put your baby to sleep with a bottle, only give the child water.

When baby teeth begin to appear, you can clean them with a wet toothbrush. Dentists say it is important to find soft toothbrushes made especially for babies and to use them very gently.

The use of fluoride (氟化物) to protect teeth is common in many parts of the world. For example, it is often added to drinking water supplies. The fluoride mixes with enamel (珐琅质) , the hard surface on teeth, to help prevent holes from forming.

小题1:Which of the following can be used as the title of the passage?

A．Concerns for Healthy Teeth of the Young

B．Causes of Teeth Problem

C．Importance of Healthy Teeth of All

D．Solutions to Teeth Problem小题2:What's the main idea of paragraph 4 and 5?

A．How to develop babies' teeth.

B．How to keep babies' teeth clean

C．Why to protect babies' teeth

D．Why to keep babies' teeth clean小题3:The passage indicates that ______.

A．Enamel is most widely used to protect teeth in the world

B．Breast milk can cure babies' bad teeth

C．Bad teeth may affect the health of adults and the young

D．Babies' teeth should be brushed once per day小题4:The writer uses the boy's death as an example to show that ______.

A．not only adults but the young may suffer from teeth problem

B．the doctors should be responsible for the case

C．babies with bad teeth can easily die

D．the boy was not fed with his breast milk

患者男性，18岁，反复午后发热1个月，体温在 37.3～37.8℃，疲乏无力，消瘦，近1周来咳嗽，偶尔咳血性痰，夜间盗汗。无胸痛、气短。外院X线检查右锁骨上见斑片状阴影。痰结核菌检查阴

该患者1个月药物治疗后症状完全消失，自行停用所有药物。2个月后再次出现发热、咳嗽，咳血性痰，每日约20ml，极度疲乏，不能坚持正常学习，再次来诊。需做以下哪项检查以协助确诊

A．血常规

B．痰细菌培养

C．血沉测定

D．肺CTD．肝功检测