Jack met an old friend on his way ____ home.[ ]
A. to
B. at
C. /
D. in
答案:C
— Could I have a word with you, mum?
— Oh dear, if you __________.
A.can
B.must
C.may
D.should
就脊神经的说法,何者不妥()。
A.借前、后根与脊髓相连
B.前根为运动根,后根为感觉根
C.借交通支与交感干相连
D.胸神经的分布有明显的节段性
E.脊神经的后支较前支粗大