Scientists think that there has been life for__31_ of years. However we haven’t found life on other planets _32_ . The earth is a planet and it _33__ around the sun. Seven other planets also go _34_ the sun. The sun and its planets are __35  the solar system. The solar system is a small part of our galaxy.

Scientists __36_ lots of spacecraft to look at other planets in the solar system, and some spacecraft have gone __37_ the solar system. However, no one __38_ any life in space yet.

But why has no one from other planets sent us a message ? Have they tried to send _39_ to us ? _40_so many stars in the universe, are we alone, or is there life out there in space ? We don’t know.

A hot dog is one of the most popular American food. It was named after frankfurter, a German food. You may hear “hot dog” ___16___ in other ways. People sometimes __17___ “hot dog” to express pleasure(快乐). For example, a friend may ask ___18___ you would like to go to the cinema. You might say, “Great. I’d love to. ” Or, you could say,”__19____! I’d love to go.” People ___20__ use the expression to describe someone who is a “show-off”, who tries to show everyone else how ___21__ he is. You often hear such a(n) ___22__ called a “hot dog”. He may be a basketball player, for example, who __23____ the ball with one hand making a(n) __24__ catch seem more difficult. You know he is a “hot dog” because when he makes such a catch, he bows(鞠躬) to crowd, hoping to __25___ their cheers.

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　　Mr Green had a new telephone number. 1 he got it, it was the number of a shop. The shop now had a new number, but a lot of women did not know 2 , so they 3 telephoned the old one.

　　At first, Mr and Mrs Green always said, “We are 4 . You have called 5 number. The shop has a new one now.” But women still continued to call them to 6 things. So after 7 , Mr and Mrs Green began to answer them like this: “good morning, madam, what do you want us to send you today?” They thought, “Perhaps they will 8 to us when they don't 9 their things.” But this didn't help them, because now women began to telephone them more and more, and to say 10 , “Where are my things? They have not come yet! Why haven't you sent them yet.”

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Some children are afraid to go to the dentist, but not me. I’m a boy of 8 and I have a funny dentist. His name is Dr. Smileyface. I don’t think that’s his real name, but that’s what he tells all the children who come to see him.

He has a cool waiting room. It has video games and a big toy box. Dr. Smileyface always wears funny hats. Sometimes he has his face painted. He asks funny questions like “Are you married yet?” and “Do you eat flowers to make your breath smell so sweet?” That makes me laugh. One time, he told me this joke, “What has lots of teeth but never goes to the dentist? A comb!” When I laughed, he pulled my tooth. It didn’t hurt at all! He also teaches me how to take care of my teeth in an interesting way. Before I leave, he always gives me a surprise. Last week he gave me a toy ship and I liked it very much.

1. How does the writer feel when he goes to the dentist?

2.What does Dr. Smileyface teach the writer to do?

3. What did Dr. Smileyface give the writer last week?