单项选择题
One possible reason why spring is the best season for thinking is that （）
A．all nature has come back to life and becomes active B．it is followed by summer C．all kinds of flowers are in full bloom D．it is warm and pleasant
单项选择题 Can you play ______
单项选择题 A scientist arrived at the conclusion that climate and temperature have （）
单项选择题 According to the passage，your intelligence probably （）
