某新生儿出生后不久出现进行性呼吸困难缺氧。诊断为新生儿呼吸窘迫综合征，其起病的主要原

鸡内金的功效是（）

A.消食化积，活血散瘀

B.消食和中，回乳，疏肝

C.消食和胃，发表

D.运脾消食，固精止遗，化坚消石

E.消食和中，健脾开胃

科学探究：（4分）

2014年，我国发现了多例人感染H7N9禽流感的病例，H7N9禽流感疫苗尚未研究成功，但H5禽流感疫苗已研制成功，利用老鼠做测试，结果发现疫苗对H5禽流感病毒感染者有百分之百的保护作用，疫苗能留在体内激发产生更多的免疫抗体。H5禽流感疫苗能否预防H7N9禽流感呢？某生物兴趣小组通过实验加以证实。

（1）他们提出的假设为                                               。

（2）设计了如下的实验方案：

①取大小相同的健康实验老鼠若干只，平均分为A、B两组。

②在A组每只老鼠体内分别注射2ml        ，B组不做任何处理，作为对照。

③一段时间后，分别给两组老鼠注射等量的感染H7N9禽流感的活禽提取液，观察两组老鼠的健康状况。

（3）实验结果：B组老鼠患病，A组老鼠               （填“患病”或“不患病”）。

（4）结论分析：出现A组实验结果的原因是                                         

阅读理解

     Imagine a classroom missing the one thing that's long been considered a necessary part to reading

and writing paper.No notebooks, no textbooks, no test paper.Nor are there any pencils or pens, which

always seem to run out of ink at the critical moment.A"paperless classroom"is what more and more

schools are trying to achieve.

     Students don't do any handwriting in this class.Instead, they use palm size, or speciallydesigned

computers.The teacher downloads texts from Internet libraries and sends them to every student's

personal computer.

      Having computers also means that students can use the Web.They can look up information on any

subject they're studying from maths to social science.

     High school teacher Judy Herrell in Florida, US, described how her class used the Web to learn

about the war in Afganistan(阿富汗) over one year ago.

      "We could touch every side of the country through different sites from the forest to refugee camps

(难民营), "she said."Using a book that's three or four years old is impossible."

      And exams can go online too.At a high school in Tennessee, US, students take tests on their own

computers.The teacher records the grades on the network for everyone to see and then copies them to

his own electronic grade book.

      A paperless classroom is a big step towards reducing the waste of paper. High school teacher

Stephanie Sorrell in Kentucky US said she used to give about 900 pieces of paper each week to each

student.

      "Think about the money and trees we could save with the computers, "she said. But, with all this

technology, there's always the risk that the machines will break down. So, in case of a power failure or

technical problems, paper textbooks are still widely available for these hitech students.

1. What does the part of the last but one sentence in the first paragraph, "run out of ink at the critical

     moment" mean?

A. Pens may not write welt at the critical moment.

B. Pens get lost easily, so you may not find them at the critical moment.

C. Pens may have little or no ink at the critical moment.

D. Pens use ink, while pencils don't.

2. In a paperless classroom, what is a must?

A. Pens.                            

B. Computers.

C. Information.                                

D. Texts.

3. The high school teacher, Judy Herrell, used the example of her class to show that________.

A. the Web could take them everywhere

B. the Web taught them a lot

C. the Web is a good tool for information

D. the Web, better than the textbooks, can give the latest and comprehensive(全面的) information

4. The paperless classrooms will benefit ________ the most.

A. students                                  

B. teachers  

C. trees                                      

D. computers

5. What does the phrase in the last paragraph, "break down", mean?

A. Break into pieces.                          

B. Stop working.

C. Fall down.                                

D. Lose control.

男性，30岁，农民，早餐后在稻田喷洒杀虫剂"乐果"后出现头晕、乏力、恶心、呕吐、腹痛、腹泻、多汗，查：血压90/60mmHg，皮肤潮湿，双瞳孔直径1.5mm，躯干和四肢可见多处肌束颤动，腹软，脐周压痛，肠鸣音亢进。

经过积极治疗后，急性中毒症状缓解，但在病程第3天时突然出现呼吸困难、呈进行性加重直至呼吸停止。这时引起呼吸衰竭的原因可能是（）

A.中毒反跳

B.中间型综合征

C.急性呼吸窘迫综合征

D.阿托品中毒

E.并发严重的肺部感染

( )应当按照国家规定的内燃机和机动车燃油经济性标准，采用节油技术，减少石油产品消耗量。

A．机动车制造企业
B．内燃机和机动车制造企业
C．汽油机与柴油机制造企业
D．汽油机制造企业