"Bite bell! " attended class, we sit on the seat as usual silent waiting for a teacher. Passed a little while, mr. Guo came, cup of half pails of water, paper and paper of a few A4 still were taken in the hand. Think in my heart: The what drug that Mr. Guo sells after all in this calabash?
“叮铃铃！”上课了，我们像往常一样坐在座位上静静等着老师。过了一会儿，郭老师来了，手里还带了半桶水、纸杯和一些A4纸。我心里想：郭老师这葫芦里到底卖的什么药啊？
Mr. Guo says: "We do an interesting little test today, cry ' water cup sucks paper ' . " classmates let should do a test, immediately brace comes. Mr. Guo was made first set an example, see her only first paper cup replete water, then, cover paper of half pieces of A4 on cup mouth, next a hand is taking a glass, another handle gently presses A4 paper gently, come over the cup again. Finally, unlock the hand that presses A4 paper slowly, water did not flow actually! Wow! This one act lets our stare tongue-tied.
郭老师说：“今天我们来做一项有趣的小实验，叫‘水杯吸纸’。”同学们一听要做实验，立刻打起精神来。郭老师先做起了示范，只见她先把纸杯装满水，接着，把半张A4纸盖在杯口上，然后一只手拿着杯子，另一只手轻轻按住A4纸，再把杯子倒过来。最后，把按住A4纸的手慢慢放开，水竟然没有流出来！哇！这一幕让我们瞠目结舌。
"Do you want not to want to also try? " Mr. Guo asks. I also press the heart that is unable to bear itch to try again, handle is lifted high, vociferous: "Teacher, let me do a test. " " row, sai Qi comes up! " me 3 paces make two paces be on a stage, first paper cup replete water, reoccupy paper of half pieces of A4 covers cup mouth, learning a teacher a moment ago model comes over water cup cautiously. I just wanted to let go, the heart frisks with respect to ground, lid of for fear that was dropped in the paper of cup mouth. The classmate below the stage is crying: "Cheer! Cheer! " my heart thinks silent is reading aloud: "I can succeed certainly! " I close a key point, did a deep breathing, let go boldly -- water did not flow actually! "I succeeded! I succeeded! " I am so excited that I ground of happy to dance cries. Teacher and classmate feel proud for me!
“你们想不想也试试？”郭老师问道。我再也按耐不住跃跃欲试的心了，把手举得高高的，大声叫着：“老师，让我来做实验。”“行，思琪上来！”我三步并作两步走上台，先把纸杯装满水，再用半张A4纸盖住杯口，学着老师刚才的样子小心翼翼地把水杯倒过来。我刚想放手，心就怦怦地乱跳，生怕盖在杯口的纸掉了。台下的同学喊着：“加油！加油！”我心想默念着：“我一定会成功！”我闭上眼，做了个深呼吸，大胆地放手了——水竟然没流出来！“我成功了！我成功了！”我激动得手舞足蹈地喊道。老师和同学都为我感到骄傲！
After the experiment ends, the teacher told us why water didn't pour out of effluent principle: Because of paper cup in replete water, turned vacuum into condition, when pressing muscularity than vacuum when airy flotage, water nature won't flow.
实验结束后，老师告诉了我们水为什么没流出来的原理：因为纸杯里装满了水，变成了真空状态，当空气的浮力比真空的压力大时，水自然不会流出来。
Today I not only did an interesting little test, still understood water cup sucks the scientific reason of paper, gains is great, I am really happy.
今天我不但做了一项有趣的小实验，还明白了水杯吸纸的科学道理，收获多多，我真开心。