搜题请搜索小程序“爱下问搜题”
问题 填空题

甲、乙两人站在地面上时身高都是L0，甲、乙分别乘坐速度为0.6c和0.8c（c为光速）的飞船同向运动，如图所示。此时乙观察到甲的身高L________L0；若甲向乙挥手，动作时间为t0，乙观察到甲动作时间为t1，则t1__________t0（均选填“>”、“ =” 或“<”）。

答案

<；=

填空题

短文填空(首字母已经给出)。

　　If I had a lot of m 1  ,I would buy a big house to l_2_in.I would buy a big

TV,a beautiful desk and some other things to put in the h  3   .I would have a

library for all my b   4  ,a music room with a big CD player.I would be very

happy in my new house.Although I will spend a lot of time in my new house,I

would also like to go traveling.I would like to see all the i   5  animals and birds.It would be very exciting.And I would also help others.I would like to give some

of my money to my hometown to make it more beautiful.

1.________2.________3.________4.________5.________
查看答案
单项选择题 B型题

美洛昔康属哪一类非甾体抗炎药（）

A.吡唑酮类

B.吲哚乙酸类

C.1，2-苯并噻嗪类

D.芳基丙酸类

E.烷酮类
查看答案