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<p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;" data-flag="normal"><span>Lesson 19.5:</span><span>讲价钱</span><span>Prices and Discounts</span></p><p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;" data-flag="normal"><span>Is 20% off OK? </span><span>打</span><span>8</span><span>折好吗？</span></p><p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;" data-flag="normal"><span>How about 40 dollars? 40</span><span>美元好不好？</span></p><p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;" data-flag="normal"><span>Can you sell it for 10 dollars? </span><span>这个</span><span>10</span><span>美元卖不卖？</span></p><p style="color:#33...