【单选题】听力原文: Tennis was one of the original sports played at the modern Olympic Games which were held in Athens, Greece in 1896, and it lasted until the 1924 Games in Paris. Later tennis was dropped out from...
A.
Because the equipment was unstable.
B.
Because the roles of the game were altered.
C.
Because the players of tennis were disliked.
D.
Because the date was different from the Wimbledon.
【单选题】参与构成血-脑屏障的胶质细胞主要是 ______ 。
【单选题】which of the following sports is not included in Summer Olympic Games ( ) .
【单选题】Which of the following Beijing Olympic mascots Fuwa symbolizes the Olympic Flame and the passion of sports?
【单选题】下列说法中,正确的是
A.
SO 2 水溶液能导电,所以SO 2 是电解质
C.
向醋酸溶液中加入少量氢氧化钠固体,由于发生中和反应,溶液的导电能力降低
【单选题】在0.1mol/L醋酸溶液中,下列说法不正确的是( )。
A.
加入少量氢氧化钠溶液,醋酸的电离平衡向右移动
C.
加入浓醋酸,由于增加反应物的浓度,使醋酸的电离平衡向右移动,电离度增加
【简答题】Passage One Some known ancient cultural relics have provided evidences that health-building activities appeared in China over 4,000 years ago. By the time of the Western Zhou Dynasty archery and cauld...
【单选题】向醋酸溶液中加入醋酸钠,下列说法正确的是( )
【单选题】关于单克隆抗体,下列哪项是错误的()。
A.
最早建立杂交瘤技术的是Kohler和Mistein
B.
杂交瘤细胞产生的是识别单一抗原决定簇的均一性抗体
D.
诱导单克隆抗体形成的抗原必须具有单一抗原决定簇
【单选题】关于单克隆抗体,下列哪项是错误的
A.
最早建立杂交瘤技术的是Kohler和Mistein
B.
杂交瘤细胞产生的是识别单一抗原决定簇的均一性抗体
D.
诱导单克隆抗体形成的抗原必须具有单一抗原决定簇