Passage One
I get a lot of letters at this time of year from people complaining that they have a cold which won’t go away. There are so many different stories about how to prevent or cure a cold; it’s often difficult to know what to do. Although colds are rarely dangerous, except for people who are already weak, such as the elderly or young babies, they are always uncomfortable and usually most unpleasant. Of course you can buy lots of medicines which will help to make your cold less unpleasant, but you must remember that nothing can actually cure a cold or make it go away any faster. Another thing is that any medicine which is strong enough to make you feel better could be dangerous if you are already taking drugs for some other illness, so always check with your chemist or doctor to see whether they are all right for you. And remember they might make you sleepy. Please don’t try to drive if they do! Lastly, as far as avoiding colds, the best ans
A. to write in an amusing way
B. to give general advice
C. to complain about his health
D. to describe personal experiences
Passage One
In a purely biological sense, fear begins with the body's system for reacting to things that can harm us -- the so-called fight-or-flight response. "An animal that can't detect danger can't stay alive," says Joseph LeDoux. Like animals, humans evolved with an elaborate mechanism for processing information about potential threats. At its core is a cluster of neurons (神经元) deep in the brain known as the amygdala(扁桃体).
LeDoux studies the way animals and humans respond to threats to understand how we form memories of significant events in our lives. The amygdala receives input from many parts of the brain, including regions responsible for retrieving memories. Using this information, the amygdala appraises a situation- I think this charging dog wants to bite me-- end triggers a response by radiating nerve signals throughout the body. These signals produce the familiar signs of distress: trembling, perspiration and fast-moving feet, ju
A. a little worry will do us good if handled properly
B. a little worry will enable us to survive a recession
C. fear strengthens the human desire to survive danger
D. fear helps people to anticipate certain future events
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