英语三级B级
单选题During daylight hours, birds _________.
参考答案：C进入在线模考
本题答案选C。细节题。题干意为“在白天，鸟儿一________。”A项“漫无目的地飞行”；B项“依靠路标”；C项“使用太阳导航”；D项“很有可能迷路”。从文章第二段第一句话“Not long a90，experiments showed that birds use the sun to guide them during daylight hours．”可以判断C为正确答案。
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