问题 单项选择题 A1/A2型题

对缺血缺氧性损害最为敏感的脑部组织是()

A.纹状体

B.小脑Purkinje细胞

C.海马神经元

D.脑干运动神经核

E.大脑皮质层

答案

参考答案:C

解析:

不同部位的脑组织对缺血、缺氧性损害的敏感性不相同,大脑皮质层(第3层、第4层)、海马神经元最敏感,其次为纹状体和小脑Purkinje细胞、脑干运动神经核的耐受性最高。

选择题
单项选择题

The Erie Canal was the first important national waterway built in the US. It crossed New York from Buffalo on Lake Erie Troy to Albany on the Hudson River. It joined the Great Lakes with the Atlantic Ocean. The canal served as a route over which industrial goods could flow into the west, and materials could pour into the east. The Erie Canal helped New York develop into the nation’s largest city.

The building of the canal was paid for entirely by the state of New York. It cost $ 7 143 789, but it soon gained its price many times over. Between 1825, when the canal was opened, and 1882, when toll charges were stopped, the state collected $121461891.

For a hundred years before the Erie was built, people had been talking about a canal which could join the Great Lakes and the Atlantic Ocean. The man who planned the Erie Canal and carried the plan through was De Witt Clinton. Those who were against the canal laughingly called it "Clinton’s Ditch". Clinton talked and wrote about the canal and drew up plans for it. He and Governor Morris went to Washington in 1812 to ask for help for the canal, but they were unsuccessful.

Clinton became governor of New York in 1817, and shortly afterwards, on July 4, 1817, broke ground for the canal in Rome, N.Y. The first part of the canal was completed in 1820. As the canal grew, towns along its course developed fast. The length of the canal is 363 miles.

Which of the following is true according to the passage()

A. The Erie Canal brought profits of over $114000000.

B. It’s 363 miles from the Great Lakes to the Atlantic Ocean.

C. The West was more advanced than the East when the canal was built.

D. Many other states helped New York built the canal.