刘振民E11-16

dengyichao

Unlike transplants between identical twins, whose genetic endowment is the same, all patients receiving hearts or other organs must take antirejection drugs for the rest of their lives.
A  Unlike transplants between identical twins, whose genetic endowment is the same
B  Besides transplants involving identical twins with the same genetic endowment
C  Unless the transplant involves identical twins, who have the same genetic endowment
D  Aside from a transplant between identical twins with the same genetic endowment
E  Other than transplants between identical twins, whose genetic endowment is the same
选C？

heypony

这题的逻辑应该是说，除非移植是发生在有相同基因的双胞胎之间，否则一般做了移植手术的病人一辈子都要服用抗排斥的药物。

unless在这里应该是除非的意思。这里unless引导从句避免了比较关系的不对等。