All of us know, color-blind people often find it difficult to __ between blue and green.
B
暂无解析
Bylocaldoctorsandnurses,wehopemorepeople.
Dr.Yangworked______threedaysago.
—Doyoumind__________here?
—________.
Writing：
PiracyisstillaseriousprobleminChina.Writeacompositionofabout400wordstostateyourview.
I______thatIwereabird.
