2. 外语
  3. A mussel grips a hard surface very firmly to ______. The waterproof super glue originates in ______.

A mussel grips a hard surface very firmly to ______. The waterproof super glue originates in ______.

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问题 A mussel grips a hard surface very firmly to ______.
The waterproof super glue originates in ______.
选项 A、the mussel’s tongue-shaped foot
B、some glands in the mussel’s body
C、the thread given off by the mussel
D、the channel of the mussel’s foot
答案B
解析 由题干The waterproof super glue originates in 定位到原文第二段第七句Special glands give off a fluid mixture of proteins into a channel that runs the length of the foot．细节题。由该句可知，特殊的腺发出一种流动的混合蛋白质……，故答案为B)。[避错]A)“贻贝的舌状脚”、C)“贻贝体分泌的丝”和D)“贻贝的脚的导管”均不合文意。
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