A．the writer's traveling experience in Botswana

　　B．some places of top quality to enjoy in Botswana

　　C．beautiful countries to visit in Southern Africa

　　D．activities people can do in Southern Africa

　　B　[主旨大意题。根据第一段第二句话"There are many top­quality places to enjoy your African trip."可知。]

　　2．What do we know about the Kalahari Game

　　Reserve?

　　A．It is larger than any other game reserve in the world.

　　B．It is a beautiful place located in a desert.

　　C．It is most famous for its giraffes.

　　D．It lacks water all the year round.

　　B　[推理判断题。根据文中The Kalahari Game Reserve部分第一句话中的"situated in the Kalahari Desert"及第三句中的"adding to the beauty of the place"可推知。]

　　3．What do the three places mentioned in the

　　passage have in common?

　　A．They are all national parks of Botswana.

　　B．They are all open to the public for free.

　　C．They are all near the Okavango Delta.

　　D．They are all full of wild animals.

　　D　[推理判断题。根据文章对三个地方的描述可推知。]

　　B

Not long ago，an airplane was flying over New Zealand.There was a television camera crew on board.Suddenly，out in the night sky，a bright sphere(球体)came into