问题 填空题

喜鹊的质量比燕子大,若它们以同一速度飞行时,具有相等的机械能,那么一定是______飞得高.

答案

物体的动能与质量和速度有关,重力势能与质量和高度有关,由于喜鹊与燕子机械能相等,喜鹊的质量较大,燕子的质量较小,它们的速度相等,故燕子飞得高.

故答案为:燕子.

完形填空

V. 短文填词 (共10小题,每小题1分,满分10分)

阅读下面短文,根据以下提示:1)汉语提示,2)首字母提示,3)语境提示,在每个空格内填人一个适当的英语单词,并将该词完整地写在右边相对应的横线上。所填单词要求意义准确,拼写正确。

The first group of 277 volunteers for the Shanghai 2010 World Expo was recently

announced. Yang Yue and Sun Ran feel highly ________(荣幸)                             76. ________

to have ________ selected. Yang Yue has a lot of previous volunteering                  77. ________

experience. In his opinion, responsibility and love are ________ great importance,  78. ________

which a volunteer must h        . He said the global environment of the                     79. ________

university has ________(提供) him chances for international exchange                   80. ________

and better communication s         will greatly benefit his service during the      81. ________

Expo. Similarly, Sun Ran, Yang’s fellow student, show great i                        82. ________

in volunteer service. He said, “________ the first day I came to the university,        83. ________

volunteer work has become a p         of my life. Any experience and attempt    84. _____

at the beginning has ________(逐渐) become an attitude and habit.                        85. ________

简答题