“早穿棉袄，午披纱”反映的是[ ]
A．某地的气温日较差大
B．某地的气温月较差大
C．某地的气温年较差大
D．某地的气温年际变化大
答案：A
We often think of the days _____ we spent together on the island.
A．when
B．which
C．in which
D．during which
供潜水员呼吸的空气压力需
A．等于大气压
B．高于绝对压
C．等于绝对压
D．低于绝对压
E．高于附加压
