青藏高原成为我国夏季气温最低地区的主要原因是（）
.Look,theyareclimbingupamountain,____(在它顶上屹立着一座古老庙宇)。
Thereason____(为什么这事情会这样)isnowclear.Idon'tneedtoexplainitoncemore.
Allofusknow,color-blindpeopleoftenfinditdifficultto__betweenblueandgreen.
The____ofAIDShasledtoanexpansioninresearchseekingacure.
Doyourememberthebuilding____flewaredflagalltheyearround?