【名词&注释】
室间隔(interventricular septum)、美国人(americans)、土壤温度(soil temperature)、阶段性(stage)、冠状沟
[单选题]光强度的变化会引起大气和土壤温度和湿度的改变，这属于生态因子的( )
A. 主导因子作用
B. 综合作用
C. 阶段性作用
D. 补偿作用
查看答案&解析
举一反三：
[单选题]If you say to an American that you are a stranger there, most probably he will______.
A. offer his help
B. stop smiling at you
C. help you find the way
D. reply that he is pleased to meet you
[单选题]A bag of wheat was enough for ______.
A. 19 squares
B. one third of the squares
C. the first 19 squares
D. 20 squares
[单选题]心房和心室在心表面的分界结构为( )
A. 前室间沟
B. 后室间沟
C. 冠状沟
D. 室间隔
E. 界嵴
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