77. As we know, vitamin C is the chief active __________ in lemons.
A: section
B: matter
C: ingredient
D: composition
A: section
B: matter
C: ingredient
D: composition
举一反三
- From the conversation, we know （） is very important for good eyesight. A: Vitamin A B: Vitamin B C: Vitamin C D: Vitamin D
- Ofloxacin Tablet’s active ingredient is __________.
- A fruit basket contains more apples than lemons. There are more lemons in the basket than oranges. Therefore, the basket contains more apples than oranges.
- About the literature of the Anglo-Norman period, we know that the work, The Song of Roland is about the matter of ____.
- We rejected the proposal _____ principle. A: as a matter of B: as a matter C: as matter D: as matter of