单选题 Australia is an island and it is a continent as well. It is the largest island in the world, but it is the smallest continent. China is about 9.7 million square kilometers, and Australia is 2.0 million square kilometers smaller than China.
Australia is in the south of the world. It lies between the Indian Ocean and the Pacific Ocean. The largest ocean in the world, namely the Pacific Ocean, is in the northeast and east of Australia, while the third largest ocean — the Indian Ocean — is mainly in the south and west of it.
The only big river in Australia is the River Murray. It begins in the mountains in the southeast of the country and it runs westward into the world third largest ocean.

单选题 Which of the following is NOT true according to the passage?

单选题 Australia is about ______ million square kilometers.

单选题 The River Murray ______.