问题
选择题
| A、B、C、D四个班各选10名同学参加学校1500米长跑比赛，各班选手平均用时及方差如下表： | |||||||||||||||
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| A.A班 B.B班 C.C班 D.D班 |
答案
答案：D
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| A、B、C、D四个班各选10名同学参加学校1500米长跑比赛，各班选手平均用时及方差如下表： | |||||||||||||||
| |||||||||||||||
[ ] | |||||||||||||||
| A.A班 B.B班 C.C班 D.D班 |
答案：D
| 从下列方框中选择适当的词或短语填空，注意其形式变化。 | |
2. There are some famous actors and actresses whose life is ____ at an early age for love affair. 3. Usually we end a letter by "Yours____". 4. Some parts of the earth-hit area are ____ and need immediate restoration. 5. Many men were ____ underground when there was an accident at the mine. 6. The government ____ a rescue team to send clothes and food to the earthquake-stricken areas. 7. ____ the head means "No" in almost all the counties. 8. Your homework should be done ____; don't delay it until tomorrow. |