因人工或机械等因素在农产品中混入杂质或农产品因辐照导致放射性污染等,属于污染。
A.化学性
B.生物性
C.物理性
D.人工性
参考答案:C
解析:本题考查农产品质量不安全的主要来源。
Mrs Johnson said, “I drew the picture last week.”
Mrs Johnson said that the picture .
A.she drew; the week before
B.I had drawn; that week
C.she had drawn; the week before
D.I drew; the last week
梵蒂冈国土面积只有0、44平方千米,合______公顷.