1．Mr. Black was in the ，standing there dumbfounded，not knowing what to do.
A．dark B．dusk C．dawn D．dam

2．Shelly had prepared carefully for her biology examination so that she could be sure of passing it on her first .
A．intention B．a(chǎn)ttempt C．purpose D．desire

3．His speech had an effect on the crowd; they all cheered him.
A．electric B．electrical C．electronic D．elastic

參考答案及解析：

1．A。譯文：布萊克先生不知情，站在那里目瞪口呆，不知怎么辦好。dark黑暗，in the dark在黑暗中；不知情；蒙在鼓里。dusk薄暮；黃昏。dawn黎明；破曉。dam大壩。

2．B。譯文：雪莉?yàn)樯�物學(xué)考試做了精心準(zhǔn)備，以便有把握地一次通過。intention意圖，意向。attempt試圖，努力。purpose目的，意圖。desire愿望，欲望。B符合題意要求。

3．A。譯文：他的演說震撼人心，整個(gè)人群都向他歡呼。electric發(fā)電的，由電產(chǎn)生的，用于導(dǎo)電的。electrical電的，與電有關(guān)的。electronic電子的。elastic有彈性的。