以下（）属于路基的地面排水设施。 A．边沟 B．渗沟 C．暗沟 D．渗井

What do people do with their old, out of date but still useful computers? Most people don’t know how to deal with them. Many old computers are put away. Many more are simply thrown away as rubbish.

Finally, some companies are thinking of ways to bring down the number of old computers. Sony has agreed to help recycle old Sony products（产品）. Dell, Hewlett Packard and other companies now also take back some old computers of their own brands.

In some countries, laws have been passed, too. Computer companies have to pay for collecting and recycling their used products. And 70% of computer waste must be recycled. The idea behind the laws is that computer companies themselves should pay for the cost. That will encourage them to make computers which are easier and cheaper to repair and upgrade（升级）.

Yet many people are throwing away good computers, while others cannot afford them at all. Hundreds of organizations are working on this problem. They collect and repair old computers. Some also teach others how to repair computers. These repaired computers then go to schools, charities（慈善团体) or people who need them. Giving a used computer to one of these organizations can turn one person’s rubbish into someone else’s useful things and cut down waste, too.

根据短文内容，选择正确答案。（10分）

小题1:What do many people do with old computers?

A．They sell them.  B．They send them to others.    C．They stop using them.

小题2:How many computer companies are mentioned in the second paragraph?

A．One.             B．Two.                 C．Three.

小题3:According to the laws in some countries, computer companies must       .

A．recycle most of their products

B．collect all their used products

C．make more cheaper computers

小题4:What do the organizations do to solve the problem of old computers?

A．Help the computer companies to collect them.

B．Repair and send them to those who need them.

C．Help people to learn to use them.

小题5:What is the main idea of this passage?

A．Repairing old computers.

B．Encouraging to make cheap computers.

C．Recycling old computers.        

酵母菌等微生物在人类的日常生活中发挥着越来越大的作用。请回答下列问题：

(1)利用酵母菌将葡萄汁发酵后是否有酒精产生，可以用重铬酸钾来检验。在酸性条件下，重铬酸钾与酒精反应呈现_____色。在发酵过程中，随着酒精度的提高，发酵液逐渐呈现深红色，原因是__________。

(2)为了提高葡萄酒品质可以在葡萄汁中加入人工培养的酵母菌，可利用_______培养基来分离获得较为纯净的酵母菌种。

(3)具有耐高糖和耐酸特性的酵母菌是理想的酒精发酵菌种的原因是_________。对野生酵母菌进行诱变可筛选出具有耐高糖和耐酸性的高产突变菌株，利用_________技术可大量获得突变菌所携带的特殊基因。

(4)在酵母菌的纯化培养中，培养基上会出现一些分别由一个酵母菌繁殖而成的________。为了能反复利用，需要将纯化后并经过繁殖培育得到的酵母菌与海藻酸钠溶液混合制成“凝胶珠”，这是使用_______技术来固定酵母细胞。

道德属于上层建筑的范畴，是一种特殊的社会意识形态。

非少尿急性肾衰竭的特点中哪项不对（）

A.尿量在800～1000ml/d

B.血中非蛋白氮增高

C.可发生尿毒症

D.症状多较严重

E.病程发展中有时可转变为少尿型

设计教学是美国出现的一种新教学组织考试，（）。

A.学生完成学习任务后，向教师汇报学习情况和接受审核

B.在教师的指导下，由学生自己决定学习目的

C.主张废除班级授课制与教科书

D.打破传统的学科界限