根据《贷款通则》规定，担保贷款系指：（）
A.信用贷款
B.保证贷款
C.抵押贷款
D.质押贷款
E.留置贷款
参考答案：B, C, D
By the end of last term, we ___ more than 2000 English words.
A．had learned
B．have learned
C．learned
D．have been learned
