将函数y=sin2x的图象向左平移$\frac{\pi }{4}$个单位, 再向上平移1个单位,所得图象的函数解析式是(     ).

下列各句中，没有语病、语意明确的一句是（ ）

某种物质熔点为232℃，在这种温度时该物质的状态应为（　　）

阅读短文，判断正误。用“正确”或“错误”表示。

Penguins are good swimmers, and they are very good at swimming in the sea. They can dive much deeper than people. Some people can dive about 180 metres, but most people can only dive about 30 metres. Penguins can dive 500 metres. That is a long way down! Do you know the TV Tower in Shanghai? That is 468 metres high.

 Penguins can hold their breath much longer than people.Some people can hold their breath for about five minutes, but most people can only hold their breath for one or two minutes. Penguins can hold their breath for 20 minutes.

Many whales can hold their breath longer than penguins. Some whales can hold their breath for about two hours!

山脉是地形的骨架，我国地形复杂多样，各具特色，读图判断正确的一项是（    ）