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【多选题】
肽键具有( )特点。(多选)A.
肽单位不能自由旋转
B.
肽键中的羰基不是正常的
C.
肽键中的氮原子的孤对电子与碳氧双键中的π-键共轭
D.
肽单位中4个原子共面
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【简答题】27 Individuals with autism are particularly weak at 28 It is possible that autism happens as a result of 29 Autism and mental retardation should be treated with 30 A typical feature of people with aut...
【单选题】Autism and mental retardation should be treated with __________. 查看材料
A.
different techniques
B.
social relationships and communication
C.
language and information
D.
several causes working together
E.
a degree of repetition
F.
skill development
【单选题】Which of the following can be inferred from the passage?
A.
After five years of intensive treatment, Adam has completely recovered.
B.
Mental retardation can result in autism.
C.
Parents should know some key symptoms of autism so that they can spot the disorder.
D.
Diagnosing autism in children is not difficult.
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