A:①③④⑤
B:③④⑤
C:①②④
D:全部
Tom and his sister ______ to the barbecue last Saturday.They were very happy.
有关板块学说的叙述,正确的是( )
B: Liu Haoran, the leading actor in the movie Detective Chinatown, ____ ____ himself by acting thrillers.
如图,已知抛物线y=﹣x2+2x+3与坐标轴交于A,B,C三点,抛物线上的点D与点C关于它的对称轴对称.
6︰16=15︰x
x=____