unlike A,B 一般
變形 B, unlike A.
A是跟B的頭比較(S主詞)還是跟尾(O受詞)比啊?
兩個我都有看過對的答案
小妹不才請知道或做題經驗多的人指教
EX
根S比較 選B
53.(27297-!-item-!-188;#058&003151)
Most vaccines are derived from weakened or killed strains of the same virus that they prevent, unlike the derivation of smallpox vaccine from a different virus altogether.
(A) the derivation of smallpox vaccine from a different virus altogether
(B) smallpox vaccine, which is derived from a different virus altogether
(C) smallpox's vaccine, which gets derived from a different virus altogether
(D) when smallpox vaccine is derived from an altogether different virus
(E) the altogether different virus from which smallpox vaccine is derived