读下面的文章，然后判断文章后面各小题，正确的答案写T，错误的答案写F。

The moon is the earth’s closest neighbor. It is the brightest object in the night sky. Scientists have studied the moon for thousands of years.

The moon is about 4.5 billion years old. It is made of rocks. It is covered with craters (火山口). They were made when objects hit the moon’s surface.

The moon has no weather. That means there is no wind or rain. Footprints (脚印) left by astronauts could last billions of years.

The moon has eight phases (月相). Once a month, we see a full moon. Sometimes we can’t see a full moon at all. The shape we see depends on how the earth, the sun, and the moon line up.

Only 12 people have walked on the moon. U.S. astronaut Neil Armstrong was the first one in 1969. He took a photo of Edwin Aldrin.

【小题1】Scientists have studied the moon for 4.5 billion years.
【小题2】Many objects hit the moon.
【小题3】There is no wind or rain on the moon.
【小题4】Edwin Aldrin took a photo of Neil Armstrong on the moon in 1969.