【多选题】某高校举办了一次特殊活动,请德国化学家展示他最新发明的某种挥发性液体。只见带着墨镜蓄着大胡子的德国化学家用沙哑的嗓音对同学们说:“我最近研究出了一种强烈挥发性的液体,现在我要进行实验,看要用多长时间能从讲台会发到全教室,凡闻道一点味道的,请马上举手,我要计算时间。” 说着,他打开了密封的瓶塞,让透明的液体挥发......不一会儿,前排的同学举起手来,接着中间的、后排的也举起了手。不到2分钟,全班同...
【单选题】某牛场牛发病,体温40~41℃,口腔黏膜发炎,明显牵缕状流涎并带有泡沫,开口时有吸吮声。在口唇、舌面、齿龈、软腭、颊部黏膜及蹄冠、蹄踵和趾间的皮肤出现水疱,水疱呈蚕豆至核桃大小,内含透明的液体,水疱破裂后,形成边缘整齐的红色溃疡。有的病牛不能采食、站立困难,甚至蹄匣脱落,病程延长。有些患牛可能在恢复过程中突然恶化,表现为全身虚弱,肌肉震颤,心脏麻痹而突然死亡为防止该病扩散,应采取的措施是()
B.
对出现临诊症状的牛实施屠宰,对同群未病牛紧急预防注射
C.
对全群所有牛实行屠宰,对周围地区实行隔离封锁
E.
对全群所有牛实行屠宰,划定疫区,隔离封锁,并紧急预防接种
【单选题】The scholar has made another breakthrough, ( ) of great importance to the progress of science and technology.
D.
about which I think it is
【单选题】The scholar has made another breakthough in this field, ______ of great importance to the progress of science and technology.
D.
about which I think it is
【单选题】The school was in 1929 by a Chinese scholar. (2015.12 真题 32) A) established B) placed C) imagined D) made
【简答题】The scholar made some __________ about the recent trends in literary research.