A:Until, told
B:Not until, told
C:Until, was told
D:Not until, was told
7×4=____ 8×7=____ 6×6=____ 5×5=____
8×8=____ 6×8=____ 7×5=____ 7×7=____
地球上最大的生态系统是( )
十二届全国人大四次会议表决通过了《慈善法》。这表明( )