Question 4 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.

4. What does the report say about the birth of the new baby elephant?

解析：C。录音后半部分提到，大象的生产很顺利，C项的smooth对录音中的smoothly，故C项为正确答案。

错项排除：A项利用录音中的22进行干扰，但录音中是说孕期持续了22个月（22 months），并不是说生产持续了22个小时，故排除A项。录音中说大象的生产很顺利，没有并发症，B项与此内容相悖，故排除。D项利用录音中出现的monitored和Dr. Sue进行干扰，但录音中是说通过身体检查和血液检查对大象进行监护，并没有说这一过程是Dr. Sue进行的，故D项排除。