用所给词语的适当形式填空。
1. We will go _____ ( sightsee ) in Beijing this summer vacation.
2. Mike is going summer _____ ( camp ) with his friends for vacation.
3. There are many American _____ ( tour ) in the beach today.
4. "I'm going to Tibet for a week." "That sounds _____ ( interest )."
5. "Where is Ann?" "She is _____ ( babysit ) her little sister at home.
6. Could you please send _____ ( I ) a postcard from Hong Kong?
7. I'm going to my _____ ( cousin ) house to have dinner with her family.
8. Why not _____ ( take ) a vacation in Europe?
9. She will finish _____ ( do ) her homework in ten minutes.
10. Would you like to go bike _____ ( ride ) this afternoon.
11. He hopes they can have a very _____ ( excite ) vacation in the mountains.
12. Mr. Smith thought about _____ ( visit ) the Summer Palace with his friends.
13. I think Qingdao is a good place _____ ( go ) sightseeing.
14. Our class _____ ( be ) going hiking next week.
15. I think he needs _____ ( have ) more time to exercise.
），箍筋采用HPB300钢筋，已知相对受压区高度ξ＝0．2842。试问，该梁所能承受的非地震时基本组合的弯矩设计值M（kN·m），与下列何项数据最为接近？提示：不考虑受压区纵向钢筋的作用。（）
