—Can you teach me how to surf the Internet?
—Take this book. It will lead you _______ it well.
A:learn
B:to learn
C:learning
D:learned
(Ⅰ)求证:AB⊥平面PAC;
(Ⅱ)求证:AQ∥平面PCD.
如图所示,人在岸上用轻绳拉船,若人匀速行进,则船将做( )