重要的一天(An Important Day)

　　july 20th 1969 was an important day for the human being.two american astronauts landed on the moon. it was the first time for man to be on the moon.

　　as soon as they got there, they put a television camera on the moon in order to let the people on the earth watch them on tv at home. before they left the moon, they collected some moon rocks and brought them back to the earth. a new age of exploration began.

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　　DangerousSportsActivities(危险运动)

　　信心的重要性(The Importance of Confidence)

　　上大学的费用(tuition and fees)

　　考古学(Archaeology)

　　汽车的利与弊(Advantages and disadvantages of private cars)

　　做朋友(Making friends)