21. Which word is close to the meaning of "camoutlaged" mechanisms in the abstract? (A) Important (B) Necessary (C) Hiding (D) Internalization.

10. What's the main purpose of this study? (A) to study the appearance of Chenopodium formosanum, (B) to investigate the antioxidant activity of fermented djulis (C) to investigate the influence of production cost on probiotcis, (D) to raise fund from foreigners.