My uncle has a new car. _____________ color is white. [ ]
A. Its
B. His
C. Her
D. It's
答案:A
咳嗽伴呼吸困难
A.呼吸道感染
B.胸膜炎
C.喉部疾病
D.肺结核
E.支气管哮喘
青蛙:蝌蚪
A.蝴蝶:蛹 B.鲫鱼:鲤鱼C.蜘蛛:虫子 D.种子:树木