—The number of people infected with COVID-19(感染新冠肺炎)around the world is still rising, right?
—Yes. No one knows ________ this terrible situation can be completely under control.
A.where B.what C.when D.that
—Excuse me, where is Mr. Brown's office?
—Sorry, I don't know. I ________ here for only a few days.
A.work B.worked C.have worked D.will work
Don't worry about us. We have enough time to look after ________.
A.themselves B.myself C.yourself D.ourselves
—How will you ask your pen pal for help?
—________ sending him an e-mail.
A.By B.In C.With D.Under
自律，即自我约束，是自我提升的一种途径，有助于我们成长，促使我们不断前行。请同学们以Self-discipline为题，用英语写一篇短文。
内容：
1、谈谈你对自律的认识；
2、你做过什么自律的事情，以及这样做给你带来的好处。
要求：
1、表达清楚，语法正确, 包括所有相关信息，可作适当发挥；
2、文章中不得出现真实姓名和校名；
3、字数：80-100。文章开头已给出，不计入总词数。
提示词语：self-discipline n. 自律 self-disciplined adj. 自律的
Self-discipline
Self-discipline is very important for everyone._______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Most people around the world are right-handed. This also seems to be true in history. In 1799, scientists studied works of art made at different times. Most of the people shown in these works were right-handed, so the scientists guessed that right-handedness had always been common through history. Today, only about 10% to 15% of the world's population are left-handed.
Why are there more right-handed people than left-handed ones? Scientists now know that a person's two hands each have their own jobs. This is because of the different work of the two sides of the brain. The right side of the brain, which makes a person's hands and eyes work together, controls the left hand. The left-side of the brain, which controls the right hand, is the centre for thinking and doing problems. These findings show that more artists should be left-handed, and studies have found that left-handedness is twice as common among artists as among people in other jobs.
No one really knows what makes a person become right-handed instead of left-handed. Scientists have found that almost 40% of the people become left-handed because their main brain is damaged when they are born. However, this doesn't happen to everyone, so scientists guess there must be another reason why people become left-handed. One idea is that people usually get right-handed from their parents. ①If a person does not receive the gene (基因) for right-handedness, he / she may become either right-handed or left-handed according to the chance and the people they work or live with.
Though right-handedness is more common than left-handedness, people no longer think left-handed people are strange or unusual. A long time ago, left-handed children were made to use their right hands like other children, but today ②they don't have to.
1.请从文章中分别找出第2、3自然段的中心句。
第2段_____________________________
第3段_____________________________
2.找出①处划线句子译成汉语。
_____________________________
3.找出②处划线单词they 所指代的内容。
_____________________________
4.根据文章内容回答问题。Why is the left-handedness more common among artists?
_____________________________
