合唱时“低音声部”和“高音声部”中的“低”和“高”是指（   ）

先通读下面短文，掌握其大意，然后在每小题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

Coming Across Aliens(外星人 )

    It was a fine night. Carl was on his way home from his friend's party.

    While Carl was walking along the path near his house, he saw a 1 in the sky. It landed on the road at once. Three aliens came out. Carl was 2, because he could understand their language. He learned that they had decided to take all the 3 out of the city.

    Carl was worried about this. He called his friends quickly. While he was 4 for them, he looked at the aliens. They pointed at a tree, and then the tree, like a bird, flew quickly 5 the UFO. One by one, many trees flew away. Soon Carl's friends arrived. They asked them to stop, but 6 didn't work. Then Mr. Bright, a police officer, came. He  7 at the aliens, but it still didn't work. One of the aliens pointed at Mr. Bright. Mr. Bright became very small. Everyone was 8 with the aliens. Carl's friend Bill ran to them. He shouted at them in a big 9. To their surprise, the aliens turned away in no time and ran into their UFO. Then the UFO flew away.

    The alarm clock rang. Carl realized that he was lying in his bed. It was just a funny  10.

在圆x²+y²﹣2x﹣6y=0内，过点E（0，1）的最长弦和最短弦分别为AC和BD，则四边形ABCD的面积为（　　）

读 “西亚地图”，下列关于该图说法正确的是(    )。