单选题Camels have extra, almost transparent, eyelids through which they can see in sandstorms.Aadditional Binvaluable Cprotective Dsensitive
单选题
Camels have extra, almost transparent, eyelids through which they can see in sandstorms.
A
additional
B
invaluable
C
protective
D
sensitive
参考解析
解析：
句意：骆驼有额外的、几乎透明的眼睑，使它在暴风沙里也能看见。extra额外的，附加的。additional与之同义。invaluable无价的，非常贵重的。protective保护的。sensitive敏感的。
句意：骆驼有额外的、几乎透明的眼睑，使它在暴风沙里也能看见。extra额外的，附加的。additional与之同义。invaluable无价的，非常贵重的。protective保护的。sensitive敏感的。
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