A-A+
A.It helps to keep the eyes moist.B.It helps t
问题详情
A.It helps to keep the eyes moist.
B.It helps the eyes absorb eye-drops.
C.It improves a person"s concentration.
D.It prevents a buildup of chemicals in the eyes.
参考答案
正确答案:A
解析:本题是因果题。从When you blink... helps moisten your eyes.可知眨眼有助于保持眼睛的湿润。