Consumers may not think of household cleaning products to be hazardous substances, but many of them can be harmful to health, especially if they are used improperly.
Consumers may not think of household cleaning products to be
Consumers may not think of household cleaning products being
A consumer may not think of their household cleaning products being
A consumer may not think of household cleaning products as
Household cleaning products may not be thought of by consumers, as
1把...视为... think of sth. as sth.,而think of sth. to be...,think of sth. being都不符合用语习惯,排除ABC。
2E中as hazardous substances作了插入语,不对。
3选D。
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