2013Äê±±¾©Ó¢Óï¸ß¿¼Ì⺬´ð°¸
µÚ¶þ²¿·Ö£ºÖªÊ¶ÔËÓ㨹²Á½½Ú£¬45 ·Ö£©
µÚÒ»½Ú µ¥ÏîÌî¿Õ£¨¹² 15 СÌ⣻ÿСÌâ 1 ·Ö£¬¹² 15 ·Ö£©
21. Volunteering gives you a chance ____lives, including your own.
A. changeB. changingC. changedD. to change
22. Don’t turn off the computer before closing all programs _____ you could have problems
A. orB. andC. butD. so

ÈÕÓï
º«Óï
·¨Óï
µÂÓï
Î÷°àÑÀÓï
Òâ´óÀûÓï
°¢À²®Óï
ÆÏÌÑÑÀÓï
Ô½ÄÏÓï
¶íÓï
·ÒÀ¼Óï
Ì©Óï


