Directions : In this section , you will hear three news reports . At the end of each news report , you will hear two or three questions . Both the news report and the questions will be spoken only once . After you hear a , you must choose the best answer from the four choices marked A ) B , C ) and D）
1.Questions 8 to 11 are based on the conversation you have just heard．
A.The reproductive cycle of barmacles.
B.A new source of protcin.
C.Types of sea animals.
D.The adhesive quality of bamacles.