Everybody hates rats. But in the earthquake places of the world – Japan, Los Angeles, Turkey – rats will soon be man’s new best friends.
What happens after an earthquake? We send in rescue(救援) dogs. Why? Because they can smell people. Dogs save lives. They help rescuers to find living people. But dogs are big and they can’t get into small spaces. So now a new research project is using a smaller animal to save lives: the rat.
How does it work? First, the rat is trained to smell people. When this happens, the rat’s brain gives a signal. This is sent to a small radio on its back, and then the rescuers follow the radio signals. When the rat’s brain activity jumps, the rescuers know that someone is alive. The rat has smelled that person.
Although there are already robots which can do this job, rats are better. Christian Linster at Cornell University, New York, says, “ ‘Robot’ noses don’t work well when there are other smells around. Rats are good at that.” Rats can also see in the dark. They are cheaper and quicker to train than dogs, and unlike robots, they don’t need electricity.
The “ rat project” is not finished, but Julie Ryan of International Rescue Corps in Scotland says, “ It would be fantastic. A rat would get into spaces we couldn’t get to and a rat would get out if it wasn’t safe.” Perhaps for the first time in history, people will be happy to see a rat in a building ( but only after an earthquake, of course.)
【小题1】In the earthquake places, rats will become man’s best friends because they can __________.

Expressions cover all parts of our life. They may be around your ears every day. You may know a lot of Chinese expressions that describe how you feel. Here are some English ones for your enjoyment.
Have Your Heart in Your Mouth
This expression means that you’re really afraid or anxious about something. When your heart starts beating so much that you can feel a thumping(怦怦跳) in your throat, it may feel like you "have your heart in your mouth."
Have Butterflies in the Stomach
How did butterflies get in your stomach? Well, those really aren’t butterflies in there. It is a way of describing those nervous feelings you might get before a test or a very important decision.
These stomach flutters (跳动) are normal and happen to many people. Some people believe having a few butterflies might even help you perform better.    
Sick as a Dog
If you’ve ever been very sick, you may have used this expression. Because dogs eat just about anything they find, they often get sick. So it’s all right to describe someone who’s not feeling well as being "sick as a dog".    
Under the Weather
When it’s rainy all day outside, how would you feel? This expression comes from the idea that bad weather might hurt a person’s health and mood(心情).
【小题1】 The expression "__" is most probably used while you are watching a thriller.
A. have your heart in your mouth    B. sick as a dog    C. under the weather
【小题2】Someone believes__ if you "have butterflies in the stomach" before a test.
A. you’re sure to fail      B. you will forget everything C. you might do better
【小题3】It’s __ to say somebody is "sick as a dog" when he is not feeling well.
A. impolite   B. suitable       C. wrong
【小题4】When somebody says "under the weather", he must feel     
A. upset      B. happy            C. calm
【小题5】All expressions discussed in this passage are about      
A. health      B. habits           C. feelings

Not long ago, I opened an interesting e-mail from Jennifer, a friend of mine. “I’ve realized I want to be around people who make me happy,” she wrote, “I’ve been seeing how I feel after communicating with different people and making a mental list of who I feel good about. And you’re on my list.”
Then she invited me — and 11 other women— to a “Movie Night” to be held every six weeks at her house. We’d chat, eat, and watch feel-good movies. She made it clear in her invitation that there was no stress to show up to all or any movie nights. Wonderful! I e-mailed her back immediately. I was in.
Later, Jennifer told me she had some puzzled reactions to her invitation. Though all the women were willing to join, some said they didn’t see themselves as cheerful people. “I’ve told them they didn’t have to be cheerful around me all the time. I invited them because they made me feel happy,” she says.
Research shows that gatherings such as Jennifer’s make sense. In a US study, researchers measured(测量) the happiness of 4739 people at regular intervals (间隔) over 20 years. The study found that a person’s happiness depends on(取决于) the happiness of people they connect with. Amazingly, it also found that happiness spreads not only between direct friends, but also among friends of your friends’ friends! And those good feelings seem to be the most contagious (传染性的) among friends of the same sex.
“People with more supportive friends are less likely to develop sadness,” says Dr Toupey Luft, a psychologist in Penticyon, British Columbia. “Though you can’t choose your family or workmates, you do have control over friendships.” With a little effort, you can add more positive(乐观的) relationships to your social circle. Here’s how…
【小题1】How many people did Jennifer invite?

Expressions cover all parts of our life. They may be around your ears every day. You may know a lot of Chinese expressions that describe how you feel. Here are some English ones for your enjoyment.
Have Your Heart in Your Mouth
This expression means that you're really afraid or anxious about something. When your heart starts beating so much that you can feel a thumping(怦怦跳) in your throat, it may feel like you "have your heart in your mouth."
Have Butterflies in the Stomach
How did butterflies get in your stomach? Well, those really aren't butterflies in there. It is a way of describing those nervous feelings you might get before a test or a very important decision.
These stomach flutters (跳动) are normal and happen to many people. Some people believe having a few butterflies might even help you perform better.
Sick as a Dog
If you've ever been very sick, you may have used this expression. Because dogs eat just about anything they find, they often get sick. So it's all right to describe someone who's not feeling well as being "sick as a dog".
Under the Weather
When it's rainy all day outside, how would you feel? This expression comes from the idea that bad weather might hurt a person's health and mood(心情).
【小题1】The expression "__" is most probably used while you are watching a thriller.
A. have your heart in your mouth
B. sick as a dog
C. under the weather
【小题2】Someone believes__ if you "have butterflies in the stomach" before a test.
A. you're sure to fail
B. you will forget everything
C. you might do better
【小题3】It's __ to say somebody is "sick as a dog" when he is not feeling well.
A. impolite   B. suitable       C. wrong
【小题4】When somebody says "under the weather", he must feel     
A. upset      B. happy         C. calm
【小题5】All expressions discussed in this passage are about      
A. health      B. habits        C. feelings