3.函数在其定义域内是( )
A. 是增函数又是偶函数 B. 是增函数又是奇函数
C. 是减函数又是偶函数 D. 是减函数又是奇函数
2.已知E、F、G、H为空间四点,设命题甲:点E、F、G、H不共面;命题乙:直线EF与GH不相交,则( )
A. 甲乙 B.乙甲
C. 甲乙 D. “甲乙”与“乙甲”均不成立
1.下列说法是正确的是( )
A. 以直角三角形的一边为轴旋旋转所得的的旋转体是圆锥;
B. 以直角梯形的一腰为轴旋转所得的旋转体是圆台;
C. 圆柱、圆锥、圆台的底面都是圆面;
D. 圆锥侧面展开图是扇形,这个扇形所在圆的半径等于圆锥的底面圆的半径。
V 短文改错(共10小题;每小题1分,满分10分)
Yesterday, my aunt called and told me in a sadly 71.__________
voice that my cousins went to play online games in a 72.__________
net bar again. She wanted me to help with her find him. 73.__________
So I went to look at him in the net bars in the city.Two 74.__________
hours later, I finally found my cousin,so he refused to 75__________
go with me.I had to call my aunt and she came and 76.__________
took home. My cousin is only fifteen years old. 77.__________
He used to good at his studies and work very hard. 78.__________
However, he has changed a lot since he starts to play 79.__________
online games.I do hope he will stop play online games. 80.______
VI书面表达 (共20分)
音乐在我们的日常生活中扮演着很重要的角色,请根据以下提示”The role of music” 为题写一篇100次左右的文章。1)音乐可以使我们放松身心,缓解压力; 2)音乐可以振奋并鼓舞人心;
3)音乐可以抚慰我们的心灵,帮助我们走出困境;
4)音乐可以帮助我们更好地了解别的文化。
注意不可逐句翻译,可根据自己对音乐的理解适当发挥,拓展。