【单选题】Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes. Some species of bacteria secrete it to form biofilms. Cellulose is the m...
【单选题】In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A), B), C) and D). Then you should...
【简答题】Directions: Read the following text from which 10 words have been removed. Choose from the words A-0 the most suitable one to fill each numbered gap in the text (1-10). There are FIVE extra words that...
【多选题】英语B级练习4 Directions: In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A, B, C and D....