讀一讀,找規(guī)律,選擇相應(yīng)的圖片。
1. pen, pencil, pen, pencil, pen,           
[     ]
2. book, ruler, ruler, book, ruler, ruler, book, ruler,           
[     ]
3. eraser, eraser, ruler, eraser, eraser, ruler,           
[     ]
4. pencil, ruler, pencil, pencil, ruler, pencil, pencil, ruler,
[     ]
1. B 2. B 3. A 4. A
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