14．When must they leave the island?

    A．In the morning．        B．In the afternoon，         C．In the evening．

13．How long will they at most wait if they miss the boat?

    A．One hour．         B．More than an hour．       C．Less than an hour．

    A．3．              B．5．              C．10

12．How many dollars can they save if they all buy round一trip tickets?

11．Where are the groups of people going?

    A．To the island．     B．To the lake．       C．To the island in the lake

9．A Because she had little paper．    B．Because she had a little paper，

   C．Because she had no paper．

8．A．The population of China．           B．The population of less developed countries.

   C．The population of the world

7．A．She ate meat．             B．She drank tea

   C．She drank milk．