div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: dfilesjiajiaobancom · Though scientists try their best it is not as easy as they thought Because they cant deal with the special environment successfully such as the change src=https:reader034vdocumentsusreader034viewer20220423075ed3e6fec8855222483d9a78html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: dfilesjiajiaobancom · Though scientists try their best it is not as easy as they thought Because they cant deal with the special environment successfully such as the change src=https:reader034vdocumentsusreader034viewer20220423075ed3e6fec8855222483d9a78html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: dfilesjiajiaobancom · Though scientists try their best it is not as easy as they thought Because they cant deal with the special environment successfully such as the change src=https:reader034vdocumentsusreader034viewer20220423075ed3e6fec8855222483d9a78html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: dfilesjiajiaobancom · Though scientists try their best it is not as easy as they thought Because they cant deal with the special environment successfully such as the change src=https:reader034vdocumentsusreader034viewer20220423075ed3e6fec8855222483d9a78html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 5button div class=ts-image amp-img class=ts-thumb alt=Page 5: dfilesjiajiaobancom · Though scientists try their best it is not as easy as they thought Because they cant deal with the special environment successfully such as the change src=https:reader034vdocumentsusreader034viewer20220423075ed3e6fec8855222483d9a78html5thumbnails5jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 6button div class=ts-image amp-img class=ts-thumb alt=Page 6: dfilesjiajiaobancom · Though scientists try their best it is not as easy as they thought Because they cant deal with the special environment successfully such as the change src=https:reader034vdocumentsusreader034viewer20220423075ed3e6fec8855222483d9a78html5thumbnails6jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 7button div class=ts-image amp-img class=ts-thumb alt=Page 7: dfilesjiajiaobancom · Though scientists try their best it is not as easy as they thought Because they cant deal with the special environment successfully such as the change src=https:reader034vdocumentsusreader034viewer20220423075ed3e6fec8855222483d9a78html5thumbnails7jpg width=142 height=106 layout=responsive amp-img divdiv