可以减少植物对硒吸收的方法是在高硒土壤中施人
A.草木灰
B.碳酸钙
C.碳酸铵
D.农家肥
E.尿素
参考答案:B
解析:
高硒土壤施以碳酸钙、氧化钡等物质可以减少植物对硒的吸收。
— You were late again, Peter.
—Sorry, I ______ to be here on time, but the traffic on the roads _____ heavy.
A.wanted; was
B.had wanted; was
C.wanted; would have been
D.had wanted; would have been
沥青路面常用的养护与改善技术有日常养护、灌缝技术、修补技术、()。
A.提高路面等级
B.罩面
C.路面补强
D.加宽
E.路面翻修与再生