【单选题】.My twin sister is ______ me. Art is my favorite, but she doesn’t like it.
【单选题】My sister bought me a new camera. I don't know ______. Can you help me? [ ]
【单选题】He didn't notice me in the crowd but he spotted my sister who was _______ because of her red hair.
【单选题】My roommate wrote that letter ______ me. I couldn't do it because I sprained my wrist while playing volleyball.
【简答题】Remember those big, colorful books with large pictures of balls or apples when you were a little kid? Those have proven to be helpful, according to a number of studies. Between 1 and 5 years old, intr...
【单选题】-Haven’t you heard from your sister? -____________ She wrote a letter to me last week.
【简答题】空气中的电场强度 V/m ,则位移电流密度 = 。
【简答题】空气中的电场强度 V/m ,则位移电流密度Jd = 。
【简答题】弧菌科细菌和肠杆菌科细菌鉴别主要依靠——试验