Go to the ___________. Water the flowers. [ ]
A. garden
B. canteen
C. gym
答案:A
用反证法证明命题“在直角三角形中,至少有一个锐角不大于45°”时,应先假设( )
A.有一个锐角小于45°
B.每一个锐角都小于45°
C.有一个锐角大于45°
D.每一个锐角都大于45°
It’s reported that ________ young ____ to be rebellious against ____ parents’ instructions nowadays.
A./, tends, his
B.the , tend, their
C.the , tend, his
D.a, tend, his