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【多选题】
酶促反应决定酶专一性(特异性)的部分是:A.
酶蛋白
B.
辅基或辅酶
C.
催化基团
D.
蛋白酶
E.
酶活性中心及中心外的必需基团
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举一反三
【单选题】"At birth the infant is only a potential human. It must learn how to be human and it learns that in a culturally specific way." This can reflect that _______________________.
A.
Culture is like the water a fish swims in.
B.
Culture is like an iceberg.
C.
Culture is the grammar of our behavior.
D.
Culture is our software.
【单选题】The infant learns to raise his head first, then to raise his chest, then to sit, stand and walk, which reflects the sequence(顺序) of human growth and development.
A.
from top to bottom
B.
from near to far
C.
from rough to fine
D.
from to complex
E.
from low to advanced
【单选题】The sense of trust in an infant is under development when ______.
A.
the infant experiences some satisfaction
B.
s' trust is adequate
C.
the infant learns how to move
D.
the infant is surrounded by people he can recognize
【单选题】某计算机存储器按字节编址,主存地址空间为 MB ,现用 4M × 8 位的 RAM 芯片组成 32MB 的主存储器,则存储器地址寄存器 MAR 的位数至少是( )
A.
22 位
B.
23 位
C.
25 位
D.
26 位
【单选题】What does the sentence 'A bird learns to sing and to fly rapidly at the right time... ? '(Para. 3) mean?
A.
A bird learns to sing and fly after twelve weeks.
B.
A bird learns to sing and fly when it is old enough.
C.
An infant learns to smile and make vowel-like sounds at twelve weeks.
D.
A bird learns to sing and fly fast at a certain stage.
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