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【简答题】
发育的分子基础是基因的特异表达，是基因按照特定的时间和空间表达的结果，是生物体基因型与内外环境因子相互作用，并逐步转化为表型的过程。
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皮皮学刷刷变学霸
举一反三
【单选题】The mother couldn’t help laughing at her little boy’s _____ appearance.
A.
amusing
B.
amused
C.
interested
D.
excited
【单选题】The mother couldn’t help laughing at her little boy’s ______ appearance.
A.
amusing
B.
frown
C.
fuss
D.
persist
【简答题】The mother couldn’t help laughing at her little boy’s______appearance.
【简答题】薪酬预算在企业薪酬管理体系中的地位和作用是什么？
【简答题】( ) 7 .The mother couldn’t believe a missing person story happened to her family.
【单选题】Her little son fell off the boat into the water due to her carelessness. The mother couldn’t help _____because she couldn’t help _____ her son out of the danger.
A.
crying; to save
B.
crying; saving
C.
to cry; to save
D.
cry; saving
【单选题】The mother couldn’t help laughing at her little boy’s _____appearance.
A.
amuse
B.
amused
C.
amusing
D.
amusement
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