国家开放大学 / 综合英语(3)
正确率:100%
As a defense against air-pollution damage, many plants and animals _ _ _ _ _ _ a substance to absorb harmful chemicals.
A.relieve
B. release
C.dismiss
D. discard
A.relieve
B. release
C.dismiss
D. discard
参考答案:
佳题速递: