2. 考研
  3. A mussel grips a hard surface very firmly to To tie itself safely to a new home, a mussel must ______

A mussel grips a hard surface very firmly to To tie itself safely to a new home, a mussel must ______

admin2005-07-06  88
问题 A mussel grips a hard surface very firmly to
To tie itself safely to a new home, a mussel must ______
选项 A、produce a thread to anchor to the hard surface
B、place many anchor lines strategically
C、hold down a tent as human beings do
D、draw air and water from its pad-like structure
答案B
解析 第二：段第九句讲到“These strategically placed threads form a bundle，which ties the mussel to its new home．”。
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