求证:
⑴What's your favourite food ?____ A. Ten yuan.
⑵Where do tigers live ?____ B. They live in the forest.
⑶What's for lunch ? ____ C. I like some noodles.
⑷How much is it ?____ D. My favourite food is rice.
⑸Can you swim ?____ E. No, I can't.
已知函数fx=sin2x向左平移π6个单位后,得到函数y=gx,下列关于y=gx的说法正确的是( )
汉字是中华文化之母。下列有关汉字的表述,不正确的是( )