单项选择题


A．It could help people of all ages to avoid cancer.
B．It was mainly meant for cancer patients.
C．It might appeal more to viewers over 40.
D．It was frequently interrupted by commercials.
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单项选择题
A．It is a survival technique for babies.B．It can ease hostilities between parents and children.C．It can make parents fell relaxed to take care of children.D．It can help children to fight diseases.
A．It is a survival technique for babies.
B．It can ease hostilities between parents and children.
C．It can make parents fell relaxed to take care of children.
D．It can help children to fight diseases.
单项选择题
A．Snakes, monkeys and wolves.B．Cats, dogs and birds.C．Tropical fish, mice and birds.D．None.
A．Snakes, monkeys and wolves.
B．Cats, dogs and birds.
C．Tropical fish, mice and birds.
D．None.
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