C.key                              D. original

　　答案为B.brilliant(绝妙的)– clever (聪明的)

　　13.Stock market price tumbledafter rumor of a rise in interest rate.

　　A.regulated                           B. increased

　　C.fell                                D.maintained

　　答案为C.tumbled(暴跌) –fell(下降)

　　14.The course gives you basic instructionsin car maintenance.

　　A.coaching                         B. idea

　　C.term                             D. aspect

　　答案为A.instructions (指导说明)—coaching（教导）

　　15.All houses within 100 metres of theseas at risk of flooding.

　　A.in danger                      B. out of control

　　C.betweenequals                  D. in particular

　　答案为A in danger of （处于危险中）— at risk of （处于风险中）