单项选择题

A．An allergy to animals.
B．A reaction to toxic chemicals.
C．An allergy to food.
D．Contact with a noxious plant.
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单项选择题
A．Took a photo of him.B．Bought him a picture.C．Held a birthday party.D．Bought him a frame for his picture.
A．Took a photo of him.
B．Bought him a picture.
C．Held a birthday party.
D．Bought him a frame for his picture.
单项选择题
A．When the plane was up in the sky.B．Ten minutes after he was sitting on board.C．Just before he fastened his seat belt.D．While he was enjoying the beauty of the sky.
A．When the plane was up in the sky.
B．Ten minutes after he was sitting on board.
C．Just before he fastened his seat belt.
D．While he was enjoying the beauty of the sky.
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