A:x2 −y24=−1
B:x24−y2=1
C:x23−y212=1
D:y212−x23=1
邓小平说:“怎么解决这个问题,我看只有实行‘一个国家,两种制度’。”“这个问题”中,目前已经解决的是( )
Peter was very________. He finished all the food on the table quickly.
— Only________ people can afford to travel around the world.
—Not exactly. I heard that a poor student travelled around the world with little money.