A：地球表面的陆地主要集中在北半球
B：抚仙湖底发现人类活动的遗迹
C：澄江的古生物化石
D：荷兰围海造田
—This history book is of great value.
—Exactly. _____ can be enjoyed from it ______ you have a deep understanding of it, however.
Daniel is ____ in our class.
