18. Two former students from Burkina Faso have designed a mosquito-repellent soap, which they hope could be a simple and ______ solution in the fight to end malaria in poverty-stricken Africa.
(A) affordable
(B) moderate
(C) beating
(D) alternative
(E) tidy

答案：登入後查看
統計： A(53), B(1), C(0), D(13), E(0) #2055385