直接法英语读本 改订本 第1册PDF电子书下载

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LESSON ONE 1

LESSON TWO 2

LESSON THREE 2

LESSON FOUR 3

LESSON FIVE 4

LESSON SIX 8

LESSON SEVEN 9

LESSON EIGHT 10

LESSON NINE 11

LESSON TEN 13

LESSON ELEVEN 14

LESSON TWELVE 15

LESSON THIRTEEN 16

LESSON FOURTEEN 22

LESSON FIFTEEN 24

LESSON SIXTEEN 31

LESSON SEVENTEEN 33

LESSON EIGHTEEN 38

LESSON NINETEEN 39

LESSON TWENTY 40

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