【多选题】T 细胞表位和B细胞表位的特点分别是
C.
T细胞识别的表位有构象表位和线性表位两种类型
D.
B细胞识别的表位有构象表位和线性表位两种类型
E.
T细胞只能识别线性表位,而B细胞可以识别线性和构象表位
【单选题】《办法》第10款规定,旅游投诉、应当符合的条件,下列表述错误的是。( )
【单选题】He was sitting there ________ his cigarette. Without any words, he seemed to be ________ deep thought. [ ]
【简答题】Mr. Patrick was new to the school and to us. Even though he was a great teacher, he seemed rather like a character out of a horror movie. He didn’t look that bad, but somehow, he looked extremely scar...