19. On turning the corner, we saw the road _______ steeply.
A. departing B. depressing C. decreasing D. descending

<depart>
depart 离开
</depart>

<depression>
depression 沮丧
</depression>

<decrease>
decrease 减少
create 创造
increase 增加
cremate 烧尽、燃尽
</decrease>

<descend>
descend 下降、遗传、（夜幕）降临
ascend 攀登、上升
condescend 屈尊、府就
descendant 后代
precursor 先人、先驱
descent 降落、世系
transcend 超越
</descend>