二次函数y=2x2+3图象的顶点坐标是______.
∵y=2x2+3=2(x-0)2+3,
∴顶点坐标为(0,3).
下列各项中读音字形错误最多的一项是( )(原创)
A.土坯(pī)扛(káng)鼎之作荟萃挖墙脚貌和神离
B.戏谑(nuè)千乘之国(shèng))枯躁笑咪咪淡泊名利
C.拾级(shè)量(liánɡ)体裁衣更迭明信片计日成功
D.琼筵(yàn)人影幢幢(zhuáng )嘻闹一炷香再接再励
按要求改写句子。
1. How's the weather in Singapore? (改为同义句)
the weather in Singapore?
2. —____ ? (看答语写问句)
—It's great.
3. There is a lot of rain in the south of China this year. (改为同义句)
often____ in the south of China this year.
4. Tom wears a shirt because it's hot here. (对划线部分提问)
Tom wear a shirt?
5. He plays computer games every morning. (改为现在进行时)
He _____ computer games now.