里氏级
参考答案:
地震释放能量的大小用震级表示,通常采用美国里克特提出的标准来划分称为里氏级。
单词拼写。
1. Do you have any difficulty ________ (解决) the problem?
2. "________ (注意), please. Flight No. 2903 has arrived."
3. Thank you for giving us so many good ________ (建议).
4. We all wish that the Asian Games (亚运会) would be held ________ (成功地) in Guangzhou.
5. Millie had no ________ (选择) but to wait for the next train yesterday morning.
6. You shouldn't leave a child ________ (单独) in the house.
7. It is said that twins have ________ (相似的) characteristics.
8. The more vegetables you eat, the ________ (健康) you will be.
9. —I am not sure which tie to wear for the party. —God! I have no idea, ________ (也).
10. He seems very serious, but in fact he has a good sense of ________ (幽默).
下列各期,流行性出血热患者可出现“三痛”症状的是()
A.发热期
B.低血压期
C.少尿期
D.多尿期
E.恢复期