问题 单项选择题 A1/A2型题

关于食管癌转移途径不正确的是()。

A.下段癌常侵入幽门、心包

B.淋巴道转移沿淋巴引流途径进行

C.上段癌可侵入喉、气管

D.晚期经淋巴道转移至锁骨上淋巴结

E.经血道转移至肝和肺

答案

参考答案:A

解析:食管癌可穿透食管壁直接侵入邻近器官。上段癌可侵入喉、气管和颈部软组织;中段癌可侵入支气管、主动髂、肺等;下段癌常侵入贲门、膈肌、心包等处。

阅读理解

The Pacific island nation of Nauru used to be a beautiful place.Now it is an ecological disaster area.Nauru’s heartbreaking story could have one good consequence — other countries might learn from its mistakes.

For thousands of years, Polynesian people lived in the remote island of Nauru, far from western civilization.The first European to arrive was John Fearn in 1798.He was the British captain of the Hunter, a whaling ship.He called the island Pleasant Island.

However, because it was very remote, Nauru had little communication with Europeans at first.The whaling ships and other traders began to visit, bringing guns and alcohol.These elements destroyed the social balance of the twelve family groups on the island.A ten-year civil war started, which reduced the population from 1,400 to 900.

Nauru’s real troubles began in 1899 when a British mining company discovered phosphate (磷酸盐)on the island.In fact, it found that the island of Nauru was nearly all phosphate, which was a very important fertilizer for farming.The company began mining the phosphate.

A phosphate mine is not a hole in the ground; it is a strip mine.When a company strip-mines, it removes the top layer of soil.Then it takes away the material it wants.Strip mining totally destroys the land.Gradually, the lovely island of Nauru started to look like the moon.

In 1968, Nauru became one of the richest countries in the world.Every year the government received millions and millions of dollars for its phosphate.

Unfortunately, the leaders invested the money unwisely and lost millions of dollars.In addition, they used millions more dollars for personal expenses.Soon people realized that they had a terrible problem — their phosphate was running out.Ninety percent of their island was destroyed and they had nothing.By 2000, Nauru was financially ruined.Experts say that it would take approximately $433,600,000 and more than 20 years to repair the island.This will probably never happen.

小题1:What might be the author’s purpose in writing the text?

A.To seek help for Nauru’s problems.

B.To tell a heartbreaking story of a war.

C.To show the importance of money

D.To give a warning to other countries小题2:What was Nauru like before the Europeans came?

A.Rich and powerful

B.Peaceful and attractive

C.Modern and open

D.Greedy and aggressive小题3:The ecological disaster in Nauru resulted from _______.

A.phosphate overmining      B soil pollution

C.farming activity             D.whale hunting

小题4:Which of the following was a cause of Nauru’s financial problem? 

A.Its phosphate mining cost much money

B.It spent too much repairing the island

C.Its leaders misused the money

D.It lost millions of dollars in the civil war.小题5:What can we learn about Nauru from the last paragraph?

A.The ecological damage is difficult to repair.

B.The leaders will take the experts’ words seriously.

C.The island was abandoned by the Nauruans

D.The phosphate mines were destroyed

单项选择题