皮皮学，免费搜题
登录
搜题
【单选题】
下列哪一项不是蛋白质二级结构的形式A.
α-右手螺旋
B.
β-折叠
C.
β-转角
D.
α-双股螺旋
E.
无规则卷曲
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】— Look at the boy running on the ground, Is it David? — It _____ be him, he has just gone to the teacher's office. [ ]
A.
must
B.
can't
C.
could
D.
may
【单选题】--David, look at the man in the over there. Can you tell me____? - -He is a doctor.
A.
who is he
B.
who he is
C.
what does he do
D.
what he does
【简答题】v. to fail to take care of sb/sth; to not give enough attention to sth
【单选题】---David, look at the man in white over there. Can you tell me_____ ?
A.
--He is a doctor.
B.
who is he
C.
who he is
D.
what is he
E.
what he is
相关题目：
参考解析：
知识点：
题目纠错 0
发布
