A．knee
B．know
C．kick
D．knife

A．to recommend a whole book for students to read
B．to require students to read carefully
C．to assign reading with a certain purpose
D．to locate, books for students to find

A．students have to read the whole book
B．students have not enough time to finish the book
C．students often fail to get the main idea of the book
D．students usually get more useless information