国际性地质年代单位和地层单位由大到小的正确说法包括( )。
A.世、代、纪
B.代、纪、世
C.统、系、界
D.界、系、统
参考答案:B,D
句型转换。
1. Can we put our coats here? (作肯定回答)
_____,_____ _____.
2. I know her brother very well.(改为一般疑问句)
_____ you _____ her brother very well?
3. Some watches are on the table.(对画线部分提问)
_____are on the table?
4. Those maps are on the wall.(改为否定句)
Those maps _____ on the wall.
5. The CDs are on the bookcase.(对画线部分提问)
_____ _____ the CDs?
简述预防接种的注意事项。