Question

　　Sorry to say, our brains naturally start slowing down at the Cruelty young age of 30. It used to be thought that this couldn't be helped, but new studies show that people of any age can train their brains to work faster. “Your brain is a learning machine,”says University of California scientist Dr. Michael Merzenich. Given the right tools, we can train our brains to act like they did when we were younger. All that's required is the practice designed just for the purpose: a few exercises for the mind.

　　Merzenich has developed a computer-based training method to speed up the process（過程）in which the brain deals with information (positscience. com). Since much of the data we receive comes through speech, the Brain Fitness Program works with language and hearing to better speed and accuracy（準確性）.

　　Over the course of training, the program starts asking you to distinguish（辨別）sounds (between“dog”and“bog”, for example) at an increasingly faster speed. It's a bit like tennis instructor, says Merzenich, hitting balls at you--faster and faster to keep you challenged（受到挑戰(zhàn)）. You may start out slow, but before long you're pretty quick.

　　The biggest finding in brain research in the last ten years is that the brain at any age is highly plastic. If you ask your brain to learn, it will learn. And it may even speed up while in the process.

　　To keep your brain young and plastic you can do one of a million new activities that challenge and excite you: playing table tennis or bridge, doing crossword puzzles, learning a language...“When it comes to preventing ageing, you really do 'use it or lose it' ,”says Barbara Sahakian, professor at Cambridge University.

(1)Dr. Merzenich's training method mainly depends on ______.

[　　]

A．speech training

B．computer languages

C．the activities one joins in

D．the information being dealt with

(2)By saying“the brain at any age is highly plastic”, the writer probably means the brain can be ______.

[　　]

A．used

B．mastered

C．developed

D．researched

(3)What can we learn from the text?

[　　]

A．Practice makes a quick mind.

B．Brain research started ten yeas ago.

C．Dr. Merzenich is a scientist in computer.

D．People believed nothing could stop the brain slowing down.

(4)Which of the following agrees with the writer's idea?

[　　]

A．The training methods work better for the old.

B．People should use the brain to stop it from ageing.

C．The training of the brain should start at an early age.

D．It's necessary to take part in as many activities as possible.

Answer 1

答案：A;C;D;B
解析：

(1)細節(jié)理解題。由文章第二段第二句話“Since much of the data we receive comes through speech, the Brain Fitness Program works with language and hearing to better speed and accuracy.”可知。 (2)句意猜測題。由短文第四段第二句可知：如果你讓你的大腦學(xué)習(xí)，它就學(xué)習(xí)，并且在這過程中，能加快學(xué)習(xí)速度。由此可知大腦是可以“開發(fā)的”。 (3)推理判斷題。A項第三段中已明確指出；B項文章未提；C項 Dr. Merzenich 不是研究電腦的，而是研究人的大腦的。由此可知 A、B、C 三項不正確，而根據(jù)短文第一段第二句話“It used to be thought that this couldn't be helped,...”一句可推斷D項正確。 (4)細節(jié)理解題。根據(jù)最后一段可知，人們要保持大腦年輕，就要進行一些有挑戰(zhàn)性，使人興奮的活動，要想阻止大腦老化，就要使用它，否則就會失去。由此可知，B項正確。