酸雨主要是燃烧含硫燃料时释放出的二氧化硫造成的。现将每隔一定时间测定某份雨水的p

完形填空。

Antarctica (南极洲) is the continent which is the most southern area of land on the Earth and is mostly covered with ice. This is one of the driest and   1   in the world. But people from all over the world come to   2    there. Near the South Pole, three thousand people live together in a place   3   Amundsen-Scott Station.       The station has libraries, cinemas, shops, sports rooms, canteens and laboratories. There is electricity, and they have   4   — the system that they use to have a conversation with someone in another place. And they have   5   — electronic machines that stores information and uses programs to help them find, organize, or change the information.       But the people here   6   travel by car, or train, or bus, because there aren't any roads or railways near the station. They travel by ship, helicopter, plane, or snow tractor, or   7   dogs.       There aren't   8   trees or flowers there, but there are hundreds of different birds and other animals.       Most of the people here are   9  . They study plant and animal life and how ice moves. The ice can tell us about changes in climate. Ray Kingman is an expert at Amundsen-Scott Station, telling us on the phone, "This is my second year here. It's a very interesting and beautiful place, but life is very hard   10  . In the summer we can go swimming in hot pools of water. We welcome newcomers here for further study of the continent!"

( ) 1. A. warm areas  ( ) 2. A. travel      ( ) 3. A. called      ( ) 4. A. telephones  ( ) 5. A. printers    ( ) 6. A. don't      ( ) 7. A. with        ( ) 8. A. much        ( ) 9. A. teachers    B. coldest places  B. go sightseeing    B. call            B. radios          B. icons             B. didn't           B. instead of        B. any             B. scientists      C. cool areas         C. work            C. calls           C. televisions     C. mouses          C. weren't     C. on            C. many            C. doctors       D. hottest places   D. enjoy themselves   D. calling            D. record players   D. computers            D. aren't        D. in front of        D. either             D. workers          ( ) 10. A. during the autumn season                C. in all weathers    B. in the springtime                          D. in the winter

解释下列句中加粗的多义词。  

（1）环滁皆山也                         

          环而攻之而不胜             

（2）望之蔚然而深秀者                                       

          城非不深               

（3）云归而岩穴暝                       

          太守归而宾客从也                

（4）而乐亦无穷也                               

          游人去而禽鸟乐也             

"农夫果园"番茄汁的原料主要来自图示的山麓河谷地区。据图回答有关问题。

（1）该地区种植番茄的主要限制性因素是____，B河流主要补给是____，此河流在山麓地带形成地貌名称是____。

（2）分析该地区生产的番茄质量优良的主要自然原因。

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（3）A城镇分布有"农夫果园"番茄榨汁企业，分析影响该企业分布的主要区位因素。

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（4）描述图示地区城镇的分布特点，并分析其主要区位因素。

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患儿，男，14岁，秋游后低热、乏力、咳嗽、少量黏痰2周。胸部X线片示两下肺网状及按小叶分布的斑片状浸润阴影。白细胞计数9.8×10⁹/L。

应首选哪项检查以便确诊

A．痰细菌培养

B．痰真菌培养

C．冷凝集试验

D．清抗体测定

E．痰涂片作抗酸染色

唐朝同北非、欧洲进行经济文化交流，要通过（）

A.日本

B.朝鲜

C.大食

D.波斯