±±¾©Êк£µíÇø¸ßÈýÄ꼶µÚһѧÆÚÆÚÖÐÁ·Ï°

µÚÒ»½Ú µ¥ÏîÌî¿Õ£¨¹²15СÌ⣻ÿСÌâ1·Ö£¬¹²15·Ö£©

21£®¡ªShall I lock the lab now before I go home?

    ¡ª          . I¡¯ll check it myself later.

       A£®Go ahead             B£®No problem         C£®No hurry             D£®Don¡¯t bother

22£®Only when you stay and live with   ___ local people for a period of time will you have   _   better understanding of life here.

       A£®a; /                     B£®the; a                  C£®/; the                   D£®the; the

23£®We spent 16 glorious days in August        the athletes¡¯ joys and tears, and we were amazed at their ability.

       A£®shared                B£®to share               C£®sharing                D£®share

24£®There you can see beautiful tall b