(单选题)

According to the passage, what can explain the cats’ loss of ability to taste sweets?

A.Their genetic defect.

B.Their taste preference.

C.Their diet selection.

D.Their preference for meat.

参考答案：A

参考解析：

细节理解题。根据文章第三段第一句“One previous study found that cats, which must eat meat in order to survive, had lost the ability to taste sweets due to a genetic defect”可知，之前的一项研究发现，由于基因缺陷，必须吃肉才能生存的猫失去了品尝甜食的能力。A项意为“它们的基因缺陷”；B项意为“它们的口味偏好”；C项意为“它们的饮食选择”；D项意为“它们对肉的偏爱”。所以熊猫之所以是失去品尝甜食是因为基因缺陷。故选A。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语