地球所处的最高级天体系统是
A.河外星系
B.总星系
C.银河系
D.太阳系
答案:B
本题考查天体系统。最高一级的天体系统是总星系,且包含了地球。
单词拼写。
1. She has all the personal q____ of a good teacher, like a sense of humor and patience.
2. Tom is not one of the top students, but a boy of average _____(智商).
3. Though my husband is not rich now but he has great earning p_____.
4. The robber was a_____ by the police while he was trying to escape from the jail.
5. It is impolite to i_____ others while they are having a conversation.
6. By a strange _____(巧合) we happened to be travelling on the same train.
7. It seemed as if everything was _____(毁坏) in the earthquake.
8. The baby b_____ out crying as soon as he saw the snake.
9. Tsunami is one of the most serious natural _____(灾害) in Japan.
10. I said hello to her, but she i______ me completely, which made me very angry.
井下所有的检漏继电器、煤电钻综保、照明信号综保的两种接地装置的距离应大于5米。()