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【多选题】
氨基酸因含有下列何基团导致兼性离子A.
氨基
B.
羧基
C.
羟基
D.
烃基
E.
二硫键
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【简答题】It is probably easier for teachers than for students to appreciate the reasons why learning English seems to become increasingly difficult once the basic structures and patterns of the language have b...
【简答题】某证券公司的经营范围仅限于证券经纪、证券投资咨询以及证券自营业务，该证券公司的注册资本最低限额为（ ）。
【单选题】It is assumed that students at an intermediate level will have a good（）of the basic structures and vocabulary of English.
A.
command
B.
commanding
C.
to command
D.
commanded
【单选题】The basic structures of the diarthroses (synovial joints ) include
A.
Articular surface, articular capsule and ligaments
B.
Articular surface, articular capsule and articular disk
C.
Articular surface, articular capsule and articular cavity
D.
Articular surface, articular cavity and articular labrum
E.
Articular surface, articular cavity and synovial bursa
【单选题】His______of the basic structures is good but his vocabulary is limited.
A.
hold
B.
grip
C.
grasp
D.
seizure
【多选题】( ) are the basic structures of learning motivation.
A.
learning needs
B.
pressure
C.
teachers’ requirement
D.
incentives
E.
parent’s vocation
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