职称英语 (12)
最新试题
They bought the land in order to build a new office block.
05-09
Do we have to wear these name tags？
05-09
Sunspots
It’s not surprising that sunspots ( 太阳黑子）were observed by ancient astronomers (天文学家）.The largest sunspots on the sun can be seen without a telescope. It was not until the inventiion of the telescope ( 望远镜）in the early 17th century， however, that systematic studies of sunspots could be undertaken. The great astronomer Galileo was among the first to make telescopic observations of sunspots.
Sunspots are regions of extremely strong magnetic fields ( 磁场） found on the sun’s surface. A sunspot has a dark central core known as the umbra. The umbra is surrounded by a dark; ring called the penumbra, where the magnetic field spreads outward. Sunspots appear dark because they are giving off less radiation. They are cooler than the rest of the sun’s surface.
Sunsipots are frequently observed in pairs or in paired groups. The members of a spot pair are identified as the leading spot and the following spot. They are identified by their position in the pair in terms of the direction in which the sun rotates ( 旋转）.
The number of sunspots at any one time varies. A large spot group may consist of as many as 10 groups and 300 spots across the sun. The number of spots changes in a fairly regular pattern called the sunspot cycle. The largest number occurs about every 11 years. At sunspot minimum, there are at most just a few small spots.
The average lifetime of an individual spot group is roughly one solar rotation, which is about 25 days. The most persistent large spots, however, can survive for two to three months.
n the last paragraph the word "persistent" means
05-09
The police crept up from behind and took the gangster by surprise.
05-09
The contract between the two companies will expire soon.
05-09
Teaching students of threshold level is hard work but the effort is very worthwhile．
05-09
She was close to success.
05-09
This table is strong and durable.
05-09
The economy continued to exhibit signs of decline in September.
05-09
Five minutes left,the outcome of the match was still in doubt.
05-09
热门试题
His knowledge of French is fair.
This was an unexpceptionally brutal attack.
Do You Have a Sense of Humor?
Humor and laughter are good for us. There is increasing evidence that they can heal us physically, mentally, emotionally, and spiritually, In fact, every system of the body responds to laughter in some positive, herting way. So how can we get more laughter into our lives?____________ (46) Psychologic and author, Steve Wilson, has some answers.
Many people believe that we are bom with a sense of humor. They think, “either you’ve got it, or you don’t. ” Dr. Wilson points out that this is false.__________ (47)
The parts of the brain and central nervous system that control laughing and smiling aremature at birth. ____________ (48) (After all，when a baby laughs,We don’t rush over andsay，“That kid has a great sense of humor!’，)A sense of humor is something that you can develop over a lifetime.
Sometimes people think that they don’t have a good sense of humor because they are not good joke tellers. Dr. Wilson reminds us that telling jokes is only one of many ways to express humor. ____________ (49) Then we will make others laugh, too.
A person who has a true sense of humor is willing and able to ate the funny side of everyday life. One of the best definitions of a sense of humor is wthe ability to see the nonserious element in a situation.w Consider this sign from a store window： “Any faulty merchandise will be cheerfully replaced with merchandise of equal quality.The store manager probably placed the sign in the window to impress customers with the store’s excellent service. ____________(50) As Dr. Wilson says, ua good sen^fe df humor means that you don’t have to be funny; you just have to see what’s funny. ”
As a politician, he knows how to mannipulate public opinion.
She felt that she had done her good deed for the day.
His stomach felt hollow with fear.
The majority of people around here are decent.
Come out，or I will bust the door down.
Please put up your hands if you have any questions.
These are their motives for doing it.
