Question

Police have asked witnesses of the accident to ___________, as the victim is critically wounded, unable to give an account of the accident.

1. A.
   come by
2. B.
   come across
3. C.
   come forward
4. D.
   come on

Answer 1

C
試題分析：A. come by得到，過來         B. come across偶然遇見      C. come forward 自告奮勇 D. come on加油；句意：警察要求事故的目擊者自動的站出來，因為被害人嚴重地受傷了，他不能給事故作出一個說明。故選C
考點：動詞短語辨析
點評：詞義辨析考的是學生的基礎詞匯知識，了解每個選項的含義是做好此類題型的關鍵，解答此類習題，首先要求學生有一定的詞匯量，句意理解后便可作答，所以平時的基礎知識記憶，詞匯積累是解答好這種題的關鍵，同時要注意這些動詞加副詞的短語，如果后面接代詞作賓語時要放在動詞和副詞之間。