A:{0}
B:{y|y2=0}
C:{x|x=0}
D:{x=0}
日本工业发展的不利条件是( )
把一条弯曲的公路改成直道,可以缩短路程,其道理用几何知识解释正确的是( )
⑴____A. restaurant B. city C. cinema
⑵____A. dress B. coat C. ice cream
⑶____A. want B. supermarket C. park
⑷____A. kite B. read C. sing
⑸____A. tired B. happy C. tea