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【单选题】
当光强度不足时，二氧化碳浓度的适当提高，则使植物光合作用强度不致于降低，这种作用称为A.
综合作用
B.
阶段性作用
C.
不可替代作用
D.
补偿作用
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Recently a number of cases have been reported of young children ______ a violent act preciously seen on television.
A.
modifying
B.
duplicating
C.
accelerating
D.
stimulating
【单选题】Recently a number of cases have been reported of young children iterate a violent act previously seen on television.
A.
modifying
B.
duplicating
C.
accelerating
D.
stimulating
【单选题】Recently a number of cases have been reported of young children ______ a violent act previously seen on television.
A.
modifying
B.
duplicating
C.
accelerating
D.
stimulating
【简答题】化学专业词汇汉译英: 极性共价键
【单选题】Recently a number of eases have been reported of young children ______ a violent act previously seen on television.
A.
duplicating
B.
modifying
C.
accelerating
D.
stimulating
【单选题】关于胎儿期的特点以下哪项不正确
A.
胎儿完全依赖母体生存
B.
孕母用药对胎儿影响大
C.
孕母的健康、营养及胎儿影响大
D.
孕母所处的工作、生活环境最胎儿影响不大
E.
胚胎前3个月易受各种不利因素影响而导致流产或死胎
【单选题】Recently a number of cases have been reported of young children ______ a violent act previously seen on television.
A.
stimulating
B.
duplicating
C.
modifying
D.
accelerating
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