皮皮学，免费搜题
登录
搜题
【简答题】
体内合成()需要维生素C的参与。 A胶原蛋白 B角蛋白 C红细胞 D视紫红质
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】_______as an Olympic event, a sport must be played in at least 75 countries on at least 4 continents.
A.
To accept
B.
Having accepted
C.
To be accepted
D.
Accepting
【单选题】To be elected to the Senate a person must______.
A.
be at least 25 years old
B.
be at least 30 years old
C.
have been a citizen for seven years
D.
be a lawyer
【单选题】Which of the following did the woman NOT mention about the production of the armchairs?
A.
Time.
B.
Labor.
C.
Technology.
【单选题】The lazy boy ate the _____ food, but did the _____ work. [ ]
A.
most, most
B.
least, least
C.
least, most
D.
most, least.
【单选题】Which of the following does the passage mention as necessary for both the production of oxygen by photodissociation and the production of oxygen by plants?
A.
Water
B.
Hydrogen
C.
Carbon dioxide
D.
Nitrogen
【单选题】---Thank for the ride home! -----______, which of the following is wrong?
A.
Don’t mention it.
B.
Not to mention
C.
Not at all
D.
That’s all right.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
