下列说法,不正确的是( )
A. B. 如果,那么
C. D. 若非零向量,则
九年级数学单选题中等难度题查看答案及解析
今年3月12日,学校开展植树活动,植树小组名同学的树苗种植情况如下表:
那么这名同学植树棵树的众数和中位数分别是( )
A. 和 B. 和 C. 和 D. 和
九年级数学单选题中等难度题查看答案及解析
下列函数中,图像在第一象限满足的值随的值增大而减少的是( )
A. B. C. D.
九年级数学单选题简单题查看答案及解析
在下列各式中,运算结果为的是( )
A. B. C. D.
九年级数学单选题简单题查看答案及解析
(2017 • 重庆中考)It’s sports time. Most ___________ students in Class 1 are playing football on the playground.
A.boy B.boys C.boy’s D.boys’
九年级英语单选题中等难度题查看答案及解析
(初高中衔接题) Tu Yoyo and other ________ showed that women can hold up the half sky.
A.woman scientists B.women scientist
C.women scientists D.woman scientist
九年级英语单选题中等难度题查看答案及解析
(创新题) Normally, which of the following takes up almost 21% in the air?________
A.CO2. B.O2. C.H2O. D.CO.
九年级英语单选题中等难度题查看答案及解析
(创新题) Liu Bei is a character in the novel ________.
A.Journey to the West
B.A Dream of Red Mansions
C.Heroes of the Marshes
D.The Romance of Three Kingdoms
九年级英语单选题中等难度题查看答案及解析
(创新题) Which city is the starting point of the Ancient Silk Road?________
A.Xi'an B.Luoyang C.Lianyungang D.Nanjing
九年级英语单选题中等难度题查看答案及解析
--Are you going out with Jade tonight?
--That's my . Mind your own!
A.offer B.business C.question D.chance
九年级英语单选题中等难度题查看答案及解析