关于淋巴结肿大的临床意义，正确的是（）. A．左锁骨上淋巴结肿大常见于肺部肿瘤  B

下图是为纪念中 * * 党十一届三中全会召开二十周年而发行的纪念币。下列各项体现“实事求是”这一思想精髓的有

①中共八大的决策                              ②开展大跃进和人民公社化运动

③提出“一个中心，两个基本点”的理论          ④建立社会主义市场经济体制

A．①②③④

B．①②③

C．①②④

D．①③④

It was early morning. Peter Corbett helped Mark Wellman out of his wheelchair and onto the ground. They stood before El Capitan, a huge mass of rock almost three-quarters of a mile high in California’s beautiful Yosemite Valley. It had been Mark’s dream to climb El Capitan for as long as he could remember. But how could a person without the use of his legs hope to try to climb it?

Mark knew he couldn’t finish the climb alone, but his friend Peter, an expert rock climber, would be there to lend a helping hand. He and Mark thought that it would take seven days to reach the top.

Peter climbed about 100 feet up and hammered a piton(岩钉) into the rock. Fastening one end of a 165-foot rope to the piton, he let one end of the rope fall down. Mark caught the rope and fastened it to his belt with a special instrument. This instrument would allow Mark to move upward, but would prevent him from falling even as much as a single inch. He next reached above his head and fastened a T-shaped bar to the rope, using the same kind of instrument.

Mark took a deep breath, pushed the T-bar up almost as far as his arms could reach, and began the first of the 7, 000 pull-ups needed to reach the top. High above, Peter let out a cheer. “You’re on your way.”

Seven years before, at the age of twenty-one, Mark had fallen while mountain climbing, injuring his backbone. The fall cost him the use of his legs, but he never lost his love of adventure or his joyful spirit.

For the first four days the two men progressed steadily upward without incident. But on the fifth day an unbearably hot wind began to blow, and as time went by, it became stronger and stronger, causing Mark to sway(摇摆) violently on his rope. But Mark kept on determinedly pushing up the T-bar and pulling himself up. In spite of that, he had to admit that he felt a lot better when the wind finally died down and his body touched solid rock again.

It took them one day more than they had expected, but on July 26 at 1:45 in the afternoon, the crowd of people waiting on the top went wild with joy as the two heads appeared. Mark Wellman had shown that if you set your heart and mind on a goal, no wall is too high, no dream impossible.

小题1:What had Mark Wellman long desired to do?

A．To finish one of the most difficult rock climbs in the world.

B．To be the first to climb El Capitan.

C．To climb the highest mountain in California.

D．To help his friend Peter climb El Capitan.小题2:How did Mark climb the mountain?

A．He fastened the rope to his wheelchair.

B．He hammered in pitons so that he had something to hold on to.

C．He held on to the T-bar and Peter pulled him up.

D．He pulled himself up using a T-bar and special equipment.小题3: How did Mark lose the use of his legs?

A．He lost his footing and fell from the side of a mountain.

B．He fell during his first attempt on El Capitan.

C．His legs were broken by falling rocks.

D．While working out in the gym, he injured his backbone.小题4:What was the worst problem Mark had during the climb?

A．He struck against the rock and hurt his arms.

B．A strong wind blew him away from the rock.

C．He kept falling several inches.

D．While swaying in space, he became terrified.小题5:How did Mark react to difficulties during the climb?

A．He admitted that he was frightened.

B．He often worried about his friend’s condition.

C．He was able to remain clam and determined.

D．He was joking to cheer himself up.

在机场管制服务中，利用监视雷达引导按VFR飞行的航空器时，（）将该航空器引入仪表气象条件。

A.可以

B.不可以

C.若雷达精度符合规定就可以

D.航空器驾驶员要求时可以

根据新股上网竞价发行程序，新股竞价发行申报时，主承销商为惟一的卖方，其申报数为新股实际发行数，卖出价格为( )。

A．实际发行价格
B．第一笔买入申报价
C．平均发行价
D．发行底价