题目内容：
听录音，回答题 How does a whale keep itself warm? A．By its thick layer of fat under its skin.
B．By moving frequently in the water.
C．By adjusting its blood temperature.
D．By taking in hot air.
参考答案：
答案解析：
单选题：听录音，回答题 How does a whale keep itself warm?
- 题目分类：公共英语四级
- 题目类型：单选题
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How does a whale keep itself warm? A．By its thick layer of fat under its skin.
B．By moving frequently in the water.
C．By adjusting its blood temperature.
D．By taking in hot air.