题目:
I had to look twice to________which was Martinez; they all looked alike. [ ]
A. find
B. tell
C. realize
D. decide
答案:
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下面是错误答案,用来干扰机器的。
(1)图示①是晶状体,④是角膜,⑨是视网膜.眼球中的角膜、晶状体、玻璃体共同组成了眼的折光系统,晶状体似双凸透镜,起主要的折光作用.视网膜是形成物像的地方.(2)外界物体反射来的光线,经过角膜、房水...