20. Broccoli _____, can prevent the human body from being damaged by oxidant environment .
A: is rich in vitamin C
B: rich in vitamin C
C: be rich in vitamin C
D: are rich in vitamin C
A: is rich in vitamin C
B: rich in vitamin C
C: be rich in vitamin C
D: are rich in vitamin C
举一反三
- The main source of vitamin D in the human body is （） A: endogenous D synthesized by skin B: vitamin D in egg yolk C: vitamin D in pig liver D: vitamin D in milk
- Human body cannot synthesize Vitamin C because the body lacks an enzyme which is needed at the end of the vitamin C biosynthesis pathway, so we must uptake Vitamin C from foods or take some additional supplements.
- Whicn vitamin can reduce the curative effect of levodopa() A: vitamin A B: vitamin B1 C: vitamin B2 D: vitamin B6 E: vitamin B12
- From the conversation, we know （） is very important for good eyesight. A: Vitamin A B: Vitamin B C: Vitamin C D: Vitamin D
- Night blindness is mainly caused by lack of( ).() A: Vitamin A B: Vitamin B1 C: Vitamin D D: Vitamin E