The list of animals that exhibits a preference of either using the right or the left hand (i.e., claw, paw, or foot) has been expanded to include the lower vertebrates.
(A) exhibits a preference of either using the right or the left hand (i.e., claw, paw, or foot) has been expanded to include (B) exhibits the preference to use either the right or the left hand (i.e., claw, paw, or foot) has been expanded and includes (C) exhibit a preference in either using the right or the left hand (i.e., claw, paw, or foot) has been expanded to include (D) exhibit a preference for using either the right or the left hand (i.e., claw, paw, or foot) has been expanded to include (E) exhibit the preference as to either using the right or the left hand (i.e., claw, paw, or foot) has been expanded and includes 作者: 夜幕如斯 时间: 2011-2-7 11:47
animals that exhibit， exhibit 是定语从句修饰的是animals 所以用复数 后面的has跟list一致 所以是单数
