【单选题】Chitin is a homopolymer of N-acetyl-D-glucosamine units in ________ linkage. It is a primary component of cell walls in fungi, the exoskeletons of arthropods, such as crustaceans and insects, the radu...
【简答题】Traditionally, a sentence is seen as a sequence ofwords. The study of sentence formation, therefore, involves a great deal of thestudy of the word, such as the classification of words in terms of part...
【多选题】我们要从自己做起,像爱护眼睛一样爱护生态环境,形成( )的生活方式,创造良好生产生活环境,建设美丽中国。
【单选题】下面设备中,不属于计算机中常用的图像输入设备的是
【单选题】In terms of communicative function, how many sentence types are there in English?