Do you go to school by bus? It is very important for you to know how to be safe when taking a bus, no matter whether you like it or not.

    First, don't run to the bus stop, but walk. While you are at the bus stop, you should wait in a safe place. Do not run or play while waiting. And never get into a car with a stranger.

    Second, don't talk in a loud voice when you are on the bus, so the driver will not be disturbed(打扰). If you need to talk with the bus driver, you'd better wait until the bus stop. Never throw things on the bus or out of the windows. Never play near the emergency exit(紧急出口). When there is a fire, the most important thing is to break the window with a hammer(锤子) or any sharp（锋利的） things and then jump out.

    Third, when you are getting off the bus, make sure you walk (not run) three more steps away from the door. This is the best place to be around a bus. Stay away from the bus wheels and watch out for moving cars!

    Last, if you leave something on the bus, never return to the bus to get it. The driver may not see you come back and he may begin moving the bus. Also, if you drop something near the bus, tell the driver before you try to pick it up, so he will know where you are.

    Careful and careless are as different as fire and water. But it is strange that quite a few scientists have both these qualities (品质 ). They are both careful and careless. {#blank#}1{#/blank#}.

    Once Newton invited a friend to dinner at home. When they were ready to eat, Newton left to get a bottle of wine (酒). {#blank#}2{#/blank#}, Newton still didn't come back. At last his friend found Newton in his lab. When Newton was going to get the bottle of wine, he suddenly had a new idea for his experiment. So he quite forgot his friend and the dinner. Another time, Newton was leading a horse up a mountain, and he held the rein(缰绳) in his hand. While he was walking along, he kept thinking about problems. {#blank#}3{#/blank#}, he found that the horse was gone.

    Einstein was another example. {#blank#}4{#/blank#}. While waiting, he became lost in thought. It started to rain. The rain kept on for some time. When he took out a piece of paper to write something down, the paper was wet and then he knew that it was raining. {#blank#}5{#/blank#}, he again forgot he was standing in the rain.

A. But after he put the paper into his pocket

B. But after his friend had waited for a long time

C. Once he was waiting for a friend at a bridge

D. Newton, the famous English scientist, was such a person

E. When he got to the top of the mountain

    When we watch movies about the future，we sometimes see robots. ⑴Some robots are very human-like. ⑵它们能像人一样走路和跳舞。Some scientists think that in the future they will make robots more like humans. However, some scientists think although we can make robots move like people, it will be difficult to make them really think like a human. For example, scientist James White thinks that ⑶robots will never be able to wake up and Know where they are. ⑷但是许多科学家不赞同怀特先生。They think that robots will even be able to talk like humans in 25 to 50 years. ⑸We never know what will happen in the future.

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Make memories of ginkgo (银杏)leaves

    Autumn is the season of harvest (收获). Leaves turn golden and are blown around by the wind. The ginkgo is one of my favorite trees.

⑴I love its beautiful golden leaves which look like fans. This autumn, I picked up some ginkgo leaves. I cleaned and dried them in the sun. When they are ready, they will be my specimens (标本). And I will put them in my books and use them as bookmarks. ⑵They will remind me of the season whenever I open my books. They are my memory of this autumn.

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