在一定条件下，若物体运动的路程s（米）与时间t（秒）的关系式为_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

在一定条件下，若物体运动的路程s（米）与时间t（秒）的关系式为s=5t²+2t，则当t=4时，该物体所经过的路程为[ ]

A．28米

B．48米

C．68米

D．88米

答案

答案：D

阅读理解

Time Day	Monday	Tuesday	Wednesday	Thursday	Friday
7:30~8:10	Chinese	Maths	Chinese	Physics	English
8:20~9:00	Politics	Geography	English	Maths	Chinese
9:10~9:50	Maths	P.E.	English	Politics	Geography
10:10~10:50	Biology	English	Art	Chinese	Chemistry
11:05~11:45	Physics	Chemistry	History	P.E.	Self study （自习）
11:45~1:30	Noon break
1:30~2:10	Class meeting （班会）	Chinese	Maths	English	Maths
2:25~3:05	English	Music	Physics	Art	P.E.
3:05~3:45	History	Computer		Computer	Music

（  ）1. Jenny has_________ every day.
A. Chinese and physics                  B. Math and art
C. English and Chinese                  D. history and P.E.
（  ）2. She finishes her morning lessons at_______.
A. 7:30a.m.             B. 11:45 a.m.      C. 1:30 p.m.             D. 3:45p.m.
（  ）3. She has noon break ______.
A. from 11:45 a.m. to 1:30 p.m.               B. from 3:05p.m. to 3:45p.m.
C. from 10:30 a.m. to 11:00a.m.               D. from 11:00a.m. to 2:00 p.m.
（  ）4. She has_________ geography lessons in a week.
A. two               B. three              C. four              D. five
（  ）5. She has_______ subjects in all（共计）.
A. seven             B. nine               C. eleven            D. thirteen

填空题

抹面砂浆具有平整表面、（）、密封和防水防渗的作用。