Imagine the following scene: on the grasslands, an elephant stands under an umbrella-like tree.   shadow(影子) grows long and thin. In the distance, you can also see a few zebras running here and there. Such a scene is commonplace in the magical continent of Africa.

Africa is the second largest continent in the world. To its southeast      the Indian Ocean, and toward the west is the Atlantic Ocean. It is also the continent with the world’s second largest population (more than 1 billion) behind Asia.

The continent is       to the world’s tallest animal, giraffes. People can also find crocodiles (鳄鱼) and hippos (河马) in grassland and rainforests.

Africa is great to visit. In east Africa, Mount Kilimanjaro stands 5,895 meters into the sky. It is the highest point in the continent.        it lies in the tropics (热带), it is covered with ice and snow year-round.

The continent       its hundreds of ethnic (种族) groups. The three largest ethnic groups are the Hausa, Igbo and Yoruba. They are all in west Africa.

Although many places in Africa are poor, this is not the whole picture. South Africa is the       country in Africa. Some parts of the country are wealthy. Modern and well-developed roads are common everywhere. You can also spend a day in a large shopping mall or taste delicious seafood in a restaurant.

中极穴可治疗除哪项之外的各病症（）

A.小便不利，遗尿，尿频

B.头痛眩晕，失眠

C.月经不调，带下

D.遗精，阳痿

E.产后恶露不止，不孕