Only when he told me________what trouble he was in.

A．did I realize B．I realized

C．do I realize D．I realize

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The scientists observed that the more junk food the rats ate, the more they wanted to eat – a behavior very similar to that of rats addicted(上了癮的) to heroin, a dangerous drug. Johnson said the experiment shows that the brain chemistry of obesity(肥胖) and drug addiction may be quite similar.

In their experiment, Johnson and his team studied the “pleasure center” of rats’ brains. The pleasure center is a complicated network of nerve cells. If the animal exercises or eats, the cells reward the animal by releasing chemicals into the body that make it feel good. And when the body feels good, the animal – or person – will want to do the behavior again.

For the experiment, Johnson fed foods like cheesecake to one group of rats. Food like this is high in calories and fat. Another group of rats got a regular diet. The rats that ate junk food started to eat more and more.

“They’re taking in twice the amount of calories as the control rats,” says Paul Kenny, one of Johnson’s colleagues.

Kenny and Johnson wanted to know what was going on in the brains of these rats. They first designed a way to deliver a small electrical charge to the rats’ brains. This electrical charge would stimulate the pleasure centers to release pleasure-causing chemicals. The rats could control how much stimulation – and how much pleasure – they received by running on a wheel. The more the rat ran, the more pleasure it received.

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C

Join the Family Read-Aloud Celebration, held by the Gonda Family Library and the Family School Alliance at UCLA Lab School, from February 21 to March 14,2014. We ask you to spend time reading aloud to your children at least 20 minutes each day.We hope to help families develop a habit of reading aloud every day throughout and beyond primary school. We'll finish the celebration with a party on March 14 for the whole school.

Ways to join:

● Visit Book Corner for reading aloud suggestions.

Come to the start of the activity on Friday, Feb, 21.

● Add books to our list of favorite read aloud

● Send us a photo of your family reading together (jkan,tor@ucta. edu). We will share it at the party.

● Record your family's reading journey! .

● Join us for th︿ party on March 14,5一7 p. rn.

Go on a reading journey!

Books can introduce your family to interesting people, exciting places, adventures and information. Let your journeys take you through these categories:

●Fiction ● Picture books ● Poetry

●Science ● History ● Sports

●Arts ● other Non-Fiction ● Benefits of Reading Aloud

Reading aloud helps a cloud to read with pleasure, create background knowledge, and build vocabulary. It also provides children with a reading model. Reading aloud doesn't just benefit young children. Parents should continue reading aloud as their children grow because listening comprehension is more important than reading skills in middle school.

Jim Trelease, in his Read-Aloud Handbook, has noted that almost as big a mistake as not reading to children at all is stopping too soon Until about the eighth grade, children listen and comprehend on a higher level than their reading skills allow them to read independently, This means children can hear and understand stories that are more difficult and more interesting than anything they can read on their own

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D. To get families into the habit of reading aloud.

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D. share your reading experience at the party

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A. young children show greater skills at listening than reading

B. children should be allowed to make mistakes in reading

C. interesting stories are easier for children to understand

D. the eighth-graders can-t read on their own

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C. Education. D. Science.

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