第27题:[单选题]Shelly had prepared carefully for her biology examination so that she could be sure of passing it on her first endeavor. A.intention B.attempt C.purpose D.desire 参考答案:B 句意:谢丽为生物考试做了细致的准备,她确信一次就可以通过。intention:目的、意图,attempt:尝试,最符合题意,purpose:目的,desire:愿望。