埋设于城市道路下面的各种管线、设施应坚持（）建设原则。
A.先难后易
B.先地下，后地上
C.先有压管后无压管
D.先大管后小管
参考答案：B
根据首字母填写英语单词。
1. Eating a b_____ diet is also very important.
2. Last night he had a s_____ because he ate something bad.
3. I'd love to, but I have to b_____ my little sister.
4. Thank you for your i_____.
5. She is a good listener because she can keep all the s_____.
公路铺筑面外侧据乔木中心不小于（）m，据灌木边缘不小于（）m。
A.0.75；不宜种
B.0.8；2.00
C.1.00；0.50
D.2.00；0.50
