— Did the storm cause ________ damage?
— Yes. Many people ______ their houses.
A：noisy; lost
B：serious, lost
C：serious; built
D：noisy; built
“物竞天择，适者生存”，动物在进化过程中形成了与环境相适应的体征，下列体征中为了减小摩擦的是（ ）
