单项选择题

A．They cannot protect the eyes when the sun is strong.
B．They can be used as fashionable toys for kids.
C．They are all fashionable.
D．They do not effectively filter out harmful rays.
<上一题 目录 下一题>
热门 试题

单项选择题
A．are less sensitiveB．open and close more quicklyC．take in more raysD．filter out ultra-violet rays less sufficiently
A．are less sensitive
B．open and close more quickly
C．take in more rays
D．filter out ultra-violet rays less sufficiently
单项选择题
A．are suspected of launching militant attacks on WesternersB．are believed to be connected with Osama Bin LadenC．have condemned militant attacks on WesternersD．have been killed by Islamic militants
A．are suspected of launching militant attacks on Westerners
B．are believed to be connected with Osama Bin Laden
C．have condemned militant attacks on Westerners
D．have been killed by Islamic militants
相关试题