1. 阅读短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

    We all live on Earth and enjoy our life every day, but you may not be aware of all the fun and interesting facts about the Earth.

    The Earth is not round. Do you think the Earth is round? Wrong! Well, it is not completely round.

    The Earth is really old. Grandma and Grandpa are old, but the Earth is much older. Scientists think that the Earth is about 4. 5 to 5 billion (十亿) years old.

    Much of the Earth is water. About 70% of the Earth is water, and only about 30% of the Earth is land.

    Earthquakes happen all the time. Do you know that the Earth has earthquakes all the time? But most of the time, the earthquakes are very small and humans cannot even feel them.

    Mount Qomolangma is the highest mountain. There are many mountains on Earth, but Mount Qomolangma is the highest mountain on Earth.

    There are so many interesting and fun facts about the Earth, Be sure to check out the sources and see how much you can learn about our awesome (令人惊叹的) planet—the Earth!

1. （1） The underlined part "be aware of" in Paragraph 1 means "________".

   A . welcome B . know C . play D . ring
3. （2） How many facts are mentioned in the passage?

   A . Three B . Four C . Five D . Six
5. （3） Mount Qomolangma is the ________ mountain on Earth.

   A . largest B . longest C . smallest D . highest
7. （4） Which of the following is NOT true according to the passage?

   A . Earthquakes happen three times a year. B . The Earth is very old C . About 70% of the Earth is water. D . The Earth isn't completely round
9. （5） What's the best title for the passage?

   A . The Earth is round B . Some fun and interesting facts about the Earth C . Enjoy your life on Earth every day D . How to feel every earthquake on Earth