问题
选择题
下列说法正确的是[ ]
A．两点之间的距离是两点间的线段
B．与同一条直线垂直的两条直线也垂直
C．同一平面内，过一点有且只有一条直线与已知直线平行
D．同一平面内，过一点有且只有一条直线与已知直线垂直
答案
答案：D
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下列说法正确的是[ ]
A．两点之间的距离是两点间的线段
B．与同一条直线垂直的两条直线也垂直
C．同一平面内，过一点有且只有一条直线与已知直线平行
D．同一平面内，过一点有且只有一条直线与已知直线垂直
答案：D
| 完型填空。 | |||
| Daniel Boone was born in the United States in 1734. He didn't go to school and couldn't read, 1 he learned all about the forest and many other things around him. He loved to live 2 in the forest because nothing would 3 him there. When he grew up, he tried to live on a farm. But he wasn't very _ 4 , and a year later he 5 to go into the unknown west lands.When he returned after two years,he became 6 for his long journey.He brought back many useful things and told stories about the Indians. After this he kept 7 to unknown places. Once he was taken away in a battle by the Indians. The Indians liked him and became his 8 : Daniel Boone 9 at the age of 86. He lives an interesting life in the early years of America and is remembered 10 an explorer(搡索者) and a pioneer. | |||
| ( )1. A. because ( )2. A. over ( )3. A. trouble ( )4. A. busy ( )5. A. hated ( )6.A. famous ( )7. A. leaving ( )8. A. friends ( )9. A. lived ( )10. A. to | B. though B. lonely B. help B. tired B. decided B. slow B. turning B. soldiers B. stayed B. for | C. when C. alone C. ask C. kind C. worried C. terrible C. traveling C. teachers C. began C. as | D. until D. along D. save D. happy D. forgot D. interested D. hurrying D. travelers D. died . D. of |