11. There are occasions in some big cities, when ingenuous questions out of the mouths of children can sometimes puzzle the experts. (      )

A. innocent                                                    B. tough

C. generous                                                    D. gentle

12. The current U.S. administration is adamant about restricting travel and exports to Cuba.(      )

A. permanent                                                  B. unyielding

C. frantic                                                       D. adverse

13. Great ideas can languish in our mind if we don’t spend time reflecting and digesting the messages we got during the past projects. (      )

A. be neglected                                              B. be disappeared

C. be prospered                                             D. be flourished

14. The emergence of Feminine Economy promotes the development of feminine tourist market. (      )

A. emergency                                                 B. contribution

C. appearance                                                 D. merger

15. One official who is well aware of the confusion afflicting both local authorities and foreign investors is Jing Shuping, president of China International Economic Consultants Inc.(      )

A. bothering                                                  B. affecting

C. worsening                                                  D. deadening