单项选择题


Questions 19 to 21 are based on the conversation you have just heard.

A．Its low purchase price.
B．Its wide availability.
C．Its good nutritional value.
D．Its higher water content.
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单项选择题
A．Family members.B．Friends and colleagues.C．Parents and grandparents.D．Family and friends.
A．Family members.
B．Friends and colleagues.
C．Parents and grandparents.
D．Family and friends.
单项选择题
A．By watching some films about World Environment Day.B．By listening to some lectures and planting trees, etc.C．By planting trees, having some green concerts, bicycle parades, etc.D．By delivering some speeches about World Environment Day.
A．By watching some films about World Environment Day.
B．By listening to some lectures and planting trees, etc.
C．By planting trees, having some green concerts, bicycle parades, etc.
D．By delivering some speeches about World Environment Day.
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