A-A+
To tie itself safely to a new home a mussel m
问题详情
To tie itself safely to a new home, a mussel must ______
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
参考答案
正确答案：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．”。
