【题目】Shelly had prepared carefully for her biology examination so that she could be sure of passing it at her first ________．（ ）
A.intention
B.effort
C.attempt
D.sight

【答案】C
【解析】A．intention意图；B．effort努力；C．attempt尝试；D．sight视力，情景；句意：Shelly为她的生物考试精心地做了准备，所以她确信第一次就能通过。故选C