平行四边形有______组对边互相平行.
根据平行四边形的定义,两组对边互相平行的四边形叫平行四边形,
所以平行四边形有 两组对边互相平行.
故答案为:两.
—Why didn’t you buy the calculator?
—I ______, but Mother ______ allow me.
A.would want to; didn’t
B.had wanted to; didn’t
C.wanted to; wouldn’t
D.had wanted to; wouldn’t
读图,回答:
沿A向B沿直线运动,运动方向为()。