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【简答题】
阴囊是包被睾丸和附睾的囊袋状结构，不仅保护睾丸及附睾，而且为精子的产生与发育创造了适宜的环境。
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举一反三
【简答题】Scientists are going to study more clouded leopards in Indonesia.
【简答题】Scientists have done a lot of study to show that praise is far ______ (effective) than criticism in improving students' behavior.
【单选题】The scientists have made an______study of the viruses that cause the disease.
A.
exhausted
B.
exhausting
C.
exhaustive
D.
exhaustion
【单选题】Which of the following about the scientists‘ study is NOT true? 查看材料
A.
They compared zoo-born elephants with wild elephants.
B.
They analyzed the records of 800 elephants kept in zoos.
C.
The zoo-bom elephants they studied were kept in European zoos.
D.
They kept detailed records of all the elephants in their care.
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