本题目来源于试卷: Unity and Diversity A.1 Water，类别为 IB生物学
[单选题]
The black-throated loon (Gavia arctica) is a bird that lives neatylq - ;ypw+6ir large bt -th .tm407 nvroatu6uho r,:odies of water in cold climates. Which of the following is a correct description tn-t0h.uh:to 7r m,v6tru 4oa of how the properties of water may make winter temperatures more moderate for the black-throated loon?
A. Water can store large amounts of heat which warms cooler air.
B. Ice floats on water so insulates the liquid water beneath the ice.
C. Water has a low specific heat capacity which warms the surrounding air.
D. Water is dense which enables the black-throated loon to float.
参考答案: A
本题详细解析:
Choice A is correct because in many climates water absorbs a large ap wsz;zo/vo w5)fr- 8oxw 5y8fmount of heat during the summer due to its high specific heat capacity and then conducts this heat to the cooler surrounding air during the winter.Choice B is incorrect because it does not explain how winter air temperatures are made more moderate, only that ice inso) ;y5po5oww- zfsxfr8w /zv8 ulates water that is below it which is not where the black-throated loon lives. Choice C is incorrect because water does not have a low specific heat capacity. Choice D is incorrect because, although it is a true statement, it does not explain how winter temperatures are made more moderate.
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