【单选题】_____ has been widely accepted as the forefather of modern linguistics
【简答题】我市某校研究性学习小组在老师指导下,对呼吸作用是否产生二氧化碳进行探究.现请你一同参与: [提出问题]:呼吸作用是否产生二氧化碳? [设计方案并进行实验]: 小雪:在试管中加入2ml蒸馏水,用一支玻璃导管插入水中吹气,结果未发现明显的现象. 小宁:在试管中加入2ml澄清石灰水,用玻璃导管向试管中的溶液吹气,产生的现象是:______,该反应的化学反应文字表达式(或化学反应式)为:______. [...
【简答题】In Germany, nuclear power has been a repeatedly argued and widely felt issue for decades.
【简答题】在图论方法中,通常用()表示人们研究的对象,用()表示对象之间的联系。
【单选题】婴儿在母亲离开前就表现得很焦虑,母亲离开后非常不安,当母亲回来时,他们表现得非常矛盾,想要接近但同时也扭动反抗。很少自己进行探索,很难被安抚。这类婴儿的依恋类型属于:( )
【单选题】Grammar mistakes of this kind _____ widely among Chinese students.
【单选题】It has been widely accepted that only when the students take an active part in the class activities _______ the most effective.
【单选题】The idea of using HIV for a beneficial purpose has been widely accepted.
【简答题】The idea of using HIV for a beneficial purpose has been widely accepted.