Question 3 is based on the news report you have just heard.

听力原文

        Officials at Reid Park Zoo in Tucson, Arizona, are celebrating the birth of a baby elephant. Zoo officials say the baby was born on Monday. It is a female, and she weighs nearly 130 kilograms. Samba, her mother is a 30-year-old African elephant. The pregnancy lasted 22 months. Officials describe the baby elephant as “healthy, standing and nursing”. The baby hasn’t been given a name yet. (3) [Samba has given birth before.] Zoo officials said during this pregnancy, she was closely monitored through physical exams and blood tests.

        Doctor Sue Tygielski is the zoo’s director of zoological operations. (4) [She said the elephant’s birth went smoothly] and, that there were no complications. The new baby expands the zoo’s elephant herd to six. That includes the baby’s parents, a sister, a brother, and an adult female.

3. What do we learn about the mother elephant Samba?

解析：B。录音中间提到，桑巴生产过。B项中的has had babies是对录音中has given birth的同义替换，故为正确答案。

错项排除：录音中说到小象出生时重130公斤，并不是象妈妈桑巴，A项张冠李戴，故A项排除。录音中提到，桑巴是一头30岁的非洲象（African elephant），但这并不等同于她来自非洲（from Africa），故C项排除。D项利用录音中的six进行干扰，但录音中是说动物园的象群（elephant herd）增加到六头，其中还包括一头成年雌象，并不都是桑巴的家庭成员，故排除D项。