内容包括:
(1) 祝贺他在中国书法比赛获得了一等奖;
(2) 肯定他取得的成绩和他为此付出的努力;
(3) 约定时间在线交流练习书法的心得。
注意:(1) 词数不少于100;
(2) 可适当加入细节,使内容充实、行文连贯;
(3) 开头和结尾已给出,不计入总词数。
参考词汇:
中国书法比赛 Chinese Calligraphy Competition
Dear Chris,
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Yours,
Li Jin
2 . Want to have a better sleep? You may just need more noise. While that may sound strange, it’s scientifically proven that certain types of noise can help you get some sleep. Think of it this way: When you’re lying in bed, every single noise—from the creak of the bed to a whistle in your partner’s nose—may keep you awake. But some types of noise, specifically white, pink and Brown noise, can mask (掩饰) these sounds, creating a more harmonious background.
White noise contains sounds of all frequencies that humans can hear, but it comes across (使产生的……印象) as a high-pitched buzz (声调高的嗡嗡声). That’s because of the way your ears hear it. Basically, your brain strengthens sounds in higher pitch frequencies. So while you may be hearing sounds from a variety of frequencies, the highest ones tend to drown (淹没) the lower pitched notes.
Pink noise takes the human tendency to hear only some frequencies into account and balances out the noise so that sounds of all frequencies are heard equally The higher the frequency, the more its volume is weakened. To your ears, the sound is deeper and softer than white noise.
In a study at China’s Peking University, researchers found that when participants were exposed to either pink noise or no noise during nighttime sleep and naps, 75% reported more restful sleep with the pink noise. Brain activity monitors proved this, showing that participants had 23% more restful brain activity at night with pink noise and 45% more restful sleep during naps.
Brown noise takes this concept to the next level, further weakening higher frequency noise to produce an even deeper and richer sound. It’s not named after the color brown but rather after the botanist Robert Brown, who in the 1800s discovered random particle motion (随机粒子运动). Brown noise is similar to random particle motion for the changes in sound signals from one moment to the next happen randomly.
When it comes right down to it, the color of noise that will help you sleep most soundly is the one you like best. While pink noise and Brown noise are deeper and more balanced than white noise, your personal sleep preferences will dictate which one gives you the best sleep.
1. How can some noise help us have a better sleep?A.By making us think of some special sounds. |
B.By confusing our brain with different sounds. |
C.By reducing the effects of disturbing sounds. |
D.By copying the sounds that we are familiar with. |
A.removes low-frequency sounds |
B.protects ears from high-pitched sounds |
C.makes sounds of all frequencies heard equally |
D.contains sounds of all frequencies people can hear |
A.Brown noise and pink noise work in a similar way. |
B.Brown noise was first discovered by Robert Brown. |
C.People cannot have a good sleep without pink noise. |
D.People benefit more from pink noise at night than in the daytime. |
A.Explain. | B.Control. |
C.Reflect. | D.Decide. |
A.Entertainment. | B.Education. |
C.Science. | D.Travel. |
A.must have taken | B.need have taken |
C.could have taken | D.might have taken |
A.Just hold you horses |
B.Just kill two birds with one stone |
C.Just have butterflies in your stomach |
D.Just throw the baby out with the bathwater |
内容包括:
(1)参赛选手;
(2)比赛过程;
(3)活动意义。
注意:
(1)词数不少于100;
(2)可适当加入细节,使内容充实、行文连贯。
An English Recitation Competition
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April 19, 2021
By Li Jin
---She French for four years in university.
A.studied | B.had studied | C.has studied | D.study |
A.helping | B.to help | C.help | D.having helped |
A.To experience | B.Having experienced | C.Experienced | D.Experiencing |
A.whether | B.how | C.if | D.when |
A.who | B.whose |
C.whom | D.which |