下列不属于影响包装材料选择的流通环境的是（）。 A.流通环境的气候条件 B.运输方式

2011年9月29日21：16，中国在酒泉卫星发射中心载人航天发射场，用“长征二号F”T1运载火箭，将“天宫一号”发射升空，如图、这次成功发射，是中国载人航天事业发展史上的里程碑．“天宫一号”发射升空二十多天以来，其飞行状况良好，工作正常．目前，在轨测试结束，即将进入交会对接准备阶段，等待与“神八”太空“飞吻”．下面说法正确的是（　　）

A．“天宫一号”围绕地球飞行时可以视为质点

B．“天宫一号”与“神八”对接时可以视为质点

C．“天宫一号”离地面太高，所以不受重力作用

D．“天宫一号”绕地飞行时运动状态发生了变化

鸡发生法氏囊病后用于治疗的首选药物是（）

A.抗生素

B.磺胺类药物

C.鸡法氏囊高免卵黄抗体

D.维生素

E.恩诺沙星

某实验小组用下列装置进行乙醇催化氧化的实验。

（1）实验过程中铜网出现红色和黑色交替的现象，请写出相应的化学方程式______________________、

______________________。

（2）在不断鼓入空气的情况下，熄灭酒精灯，反应仍能继续进行，说明该乙醇催化反应是___________反应。

（3）甲和乙两个水浴作用不相同。甲的作用是___________；乙的作是___________。

（4）反应进行一段时间后，试管a中能收集到不同的物质，它是___________。集气瓶中收集到的气体的主要成分是___________。

（5）若试管a中收集到的液体用紫色石蕊试纸检验，试纸显红色，说明液体中还含有___________（填物质）。要除去该物质，可现在混合液中加入___________。

a．氯化钠溶液　b．苯　c．碳酸氢钠溶液 d．四氯化碳

然后，再通过___________（填试验操作名称）即可除去。

For eighty four days old Santiago had not caught a single fish. At first a young boy, Manolin, had shared his bad fortune, but after the fortieth luckless day the boy’s father told his son to go in another boat. From that time on, Santiago worked alone. The boy loved the old fisherman and  always helped him with money and food. Usually, they would talk about the fish they had taken in luckier times or about American baseball after supper, while at night, alone in his cottage, Santiago dreamed of lions on the beaches of Africa, where he had gone years before. He no longer dreamed of his dead wife.

On the eighty-fifth day, Santiago set off to fish before dawn. Two of his baits(饵) were fresh tunas(金枪鱼) the boy had given him, as well as sardines(沙丁鱼) to cover his hooks. Then he set his lines which went straight down into deep dark water.

As the sun rose he saw other boats in toward shore. A bird showed him where dolphin were chasing some flying fish. This time Santiago saw tuna jumping in the sunlight. A small one took the hook on his line. Pulling the fish aboard, the old man thought it a good fortune.

Toward noon a marlin, a common fish in the sea, started eating the bait which was one hundred meters down. Gently the old man played the fish, a big one, as he knew from the weight on the line. At last he struck to settle the hook. The fish did not come out of the surface. Instead, it began to pull the boat to the northwest. The old man followed it. Although he was alone and no longer strong, he had his skill and knew many tricks. He waited patiently for the fish to be tired .

It was cold after the sunset. When something took one of his remaining baits, he cut the line with his knife. Once the marlin leaned suddenly, pulling Santiago forward on his face and cutting his cheek. By dawn his left hand was cramped(抽筋的). The fish had headed northward; there was no land in sight. Hungry, he cut pieces from the tuna and chewed them slowly.

That morning the fish jumped. Seeing it, Santiago knew he had hooked the biggest marlin he had ever seen. Then the fish went down and turned toward the east. Santiago drank a little water from the bottle during the hot afternoon.

Close to nightfall a dolphin took the small hook he had rebaited. He lifted it aboard, careful. After he had rested, he cut meat from the dolphin and kept also the two flying fish he found in its stomach. That night he slept. He awoke to feel the line running through his fingers as the fish jumped. Feeding line slowly, he tried to tire the marlin. After the fish slowed its run, he washed his cut hands in sea water and ate one of the flying fish. At sunrise the marlin began to circle. Faint, he worked to bring the big fish nearer with each turn. Almost exhausted, he finally drew his big fish alongside and drove in the harpoon(鱼叉). The fish was two feet longer than the boat. No fish like it had ever been seen in Havana harbor.

An hour later, he sighted the first shark, a fierce Mako, and it came in fast to chase after the dead marlin. The old man struck the shark with his harpoon. The Mako rolled and sank, carrying the harpoon with it and leaving the marlin bloody. He knew the smell would spread. Watching, he saw two sharks closing in. He struck at one with his knife and watched it sliding down into deep water. The other he killed while it tore at the flesh of the marlin. When the third appeared, he thrust(刺) it with the knife. The other sharks came at sunset. At first he tried to beat them with the tiller(舵柄) from the boat, but his hands were bleeding and there were too many in the sea. In the darkness, as he steered toward the harbor of Havana, he heard them hitting the boat again and again. But the old man thought only of his steering and his great tiredness. He had gone out too far and the sharks had beaten him. He knew they would leave him nothing but the stripped skeleton of the big marlin.

All lights were out when he sailed into the little harbor and beached his boat. He could just make out the white backbone and the upstanding tail of the fish. Once he fell under their weight and lay patiently until he could gather his strength to go on. In his cottage he fell on his bed and went to sleep.

小题1:The above story is adapted from __________.

A．Treasure Island

B．The Adventures Of Tom Sawyer

C．The Old Man And The Sea

D．The Son Of The Sea 小题2:Why did the man feel that he could be lucky this time?

A．Because a small tuna took the hook on his line.

B．Because he dreamed about the American lions.

C．Because he saw many flying fish were chased by the dolphins.

D．Because a lot of sharks followed his boat.小题3:According to the text, which statement is NOT true about Manolin?

A．The boy had mercy on Santiago.

B．The boy often shared his stories with Santiago.

C．The boy showed his great concerns to Santiago.

D．The boy was Santiago’s adopted son.小题4:Why does Santiago let the marlin lead his boat instead of pulling the big fish up?

A．He wanted to kill the marlin first before he pulled it up to the boat.

B．He was too tired and hungry to pull the big fish up.

C．His experience told him not to do so before the fish was tired out.

D．He wanted to use the marlin as a bait to catch the sharks.小题5: Which sentence below can be used to best describe Santiago’s character?

A．“He no longer dreamed of his dead wife.”(Para 1)

B．“Although he was alone and no longer strong, he had his skill and knew many tricks.”(Para4)

C．“Almost exhausted, he finally drew his big fish alongside and drove in the harpoon.”(Para7)

D．“Once he fell under their weight and lay patiently until he could gather his strength to go on .”(Para 9)小题6: According to the text, what will be talked about in the next paragraph?

A．the man’s action to realize his dream about the lions.

B．people’s reflection when they saw the giant marlin outside.

C．people’s discussion about how they ate the giant marlin.

D．a funeral held by the boy and the local people after his death.

球墨铸铁管一般为柔性橡胶圈密封接口，一般适用于( )施工。

A．穿越铁路、公路、河谷及地震区

B．大半径弯道直接安管

C．环境恶劣条件下

D．小管径直线铺设