科技成果转化涉及多个领域，具有较强的综合性。我国缺乏多部门统筹协同机制，难以形成全链

阅读短文，选择正确答案。

     Some members of an International Voluntary Organization (国际志愿组织) arrived at a small village of an

African country. 

     The villagers lived in small houses, which were built with wood and leaves. There was no school or hospital.

The villagers didn't know how to grow crops. They only went to kill some wild animals and pick some fruits in

the mountains as their food. The volunteers (志愿者) came here to help the village kids. They brought with them

many textbooks and some medicine. They taught the kids how to play volleyball and also tried to learn their

language so that they could talk with the kids better. 

     Because of their hard work, the International Voluntary Organization gave the villagers the money to carry

electricity to the village. When the lights in every house were shining, the villagers were very excited. They called

them "the little suns". Then, they held a party to choose some lucky men who would invite the volunteers to go

to their homes to see the beautiful night together with their families.

1. The volunteers came to the small village ________. [ ]

A. for fun

B. to help the villagers

C. for a trip

D. to do some experiments

2. How did the villagers get their food? [ ]

A. They grew crops.

B. Someone sent them the food.

C. They got it from the river.

D. They looked for it in the mountains by themselves.

3. The volunteers tried to learn their language because ________. [ ]

A. it was great fun

B. they thought it was interesting

C. they wanted to talk with the kids better

D. they wanted to learn this kind of language

4. Before the volunteers came to the village, there was ________. [ ]

A. no electricity in the village

B. only a school in the village

C. no food for the village

D. a hospital in the village

5. The lucky men could ________. [ ]

A. turn on the lights first

B. carry electricity to the village

C. be offered some money to carry electricity

D. have a chance to invite the visitors to go to their homes

今年4月，冰岛埃亚菲亚德拉火山爆发，大量水蒸气和二氧化硫混杂在火山灰中，随空气流动大面积蔓延。

(1)二氧化硫(SO₂)中硫和氧两种元素的质量比为______________。

(2)据专家估算，全球火山每年释放出数百亿千克的二氧化 硫，二氧化硫在空气中经过一系列变化生成硫酸，加剧了 酸雨污染。二氧化硫形成硫酸的化学方程式可表示为： 2SO₂+2H₂O+O₂ =2H₂SO₄，试计算16千克的二氧化硫完全反应生成硫酸多少千克？

(3)除火山等自然因素外，人类的活动也会加剧酸雨的形成。 写出一种有利于减少酸雨的措施：_____________________________。

社会物流基础设施关联的信息系统有（）

A.道路交通关联智能系统

B.通关信息管理系统

C.货物管理系统

D.港口海运信息系统

预付备料款是由发包单位在开工前拨给承包单位用于( )所需流动资金。

A．进场
B．购买设备
C．储备主要材料、结构件
D．搭建临时设施

我国沪深证券交易所目前采用的报价方式是( )。

A．口头报价

B．书面报价

C．电脑报价

D．人工报价