With the ____________ (develop) of industry, air pollution is getting more and more serious. In Beijing, many people suffer different kinds of illnesses because
___________ air pollution.
Air pollution is caused by the following________: about half of the problem is caused by vehicles. There are more and more cars, buses on the roads, and they give off
__________(poison) gases. 25% of air pollution is caused by factories. Another factor is the smokers. Smoking not only does harm to their health
_________ to others.
________ these, about 10%of air pollution is caused by other reasons.
We should take some measures to fight ____________ pollution. New fuel can be used to take
__________ place of gas. We can plant more trees. If everybody realizes the
__________(important) of environment and does something to stop pollution, the problem will
___________ (solve).
In the summer of 1848, in Guatemala, a man called Ambrosio Tut went into the jungle, as he did almost every day. Tut was a gum-collector(树胶采集者)，(look) for gum in the jungle. To do this, he had to climb the trees.
this particular day, he got to the top of one tree and something caught his eye. He looked out across the trees and saw the tops of some old buildings.
Tut didn't really know what he had seen but he knew it was something (specially). He ran to tell the local governor, and together they
(walk)into the jungle. There they found Tikal(蒂卡尔)，the city that the Mayans (玛雅A) had built many hundreds of years before. The two men saw temples and pyramids, squares and houses, and places
kings had lived when the Mayan people ruled the region.
For a long time before that day, local people had known that somewhere in the jungle there was an old Mayan city, no one had seen it for centuries.
200 and 900 AD, the city of Tikal had been the center of Mayan civilization in the region, but then the Mayans left
─nobody knows why! After 1000 AD, the jungle began to cover it and people forgot that it was there.
Seven years before Tut looked out for the trees, two British explorers had gone to Guatemala and had written a report about Mayan treasures in the jungle, but they didn't mention Tikal. Even (early)than this, local Indians had told European travelers about a great city
(hide) in the trees, but no one would listen to them. Now the lost city had been found again, and archaeologists (考古学家) went there immediately to see it.
I seldom thought I had a passion. I would sit before the TV all day, thinking nothing but the next shadow. It was not long ago that I first learned how important having a passion is to life.
One day I went with Mum to drop my sister off at the gym. Then, Mum stopped at a red light, someone on the roadside caught my eyes. It was a man
(dress) in rags, homeless. That didn’t interest me, for I
(see) many like him before.
But he man wasn’t sitting down with a sad (express). He had a radio in his hand and was dancing
(merry) to the music. The radio seemed to be the most precious thing
he had.
“Mum, why does that man have a radio even though he’s homeless?” I asked.
“He bought ,” she replied.
“But if he’s homeless, why doesn’t he use the money to buy food or clothes? He wasted it on something he doesn’t need.”
“Well, Sarah, sometimes food and clothes aren’t only important things. We need happiness, too.”
“I see.” The man must care too much about music, so he bought a radio instead of food and clothes. I realized that happiness is the key to life. it, there’s nothing to look forward to. A passion gives a person the happiness they need to keep going!
Six days of spring rain had created a wild river ____(run) by Nancy Brown’s farm．As she tried to drive her cows to higher ground, she __
____(slip) and hit her head on a fallen tree trunk．Nancy was badly hurt and could only walk with great _
___(difficult）．The water __
___(rise)．Nancy’s pace got slower and slower．Finally, all she could do was to throw her arm around Lizzie’s neck and try to hang on．About 20 minutes later, Lizzie managed to _
___ (succeed) pull herself and Nancy out of the water and onto a bit of high land．
It took rescuers another two hours to discover Nancy．____ helicopter lowered a doctor, __
____attached Nancy to a life-support lift．They raised her into the helicopter and took her to the school gym, _
____the Red Cross had set up an emergency shelter．
When the flood subsided two days later, Nancy immediately went back to the highland．Lizzie was gone. ______was one of the 19 cows that Nancy lost．“I owe my life
____her,” said Nancy sobbingly．
阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。
The Dragon Boat Festival is celebrated on the fifth day of the fifth month according to the Chinese calendar. For thousands of years, the festival _____(mark) by eating zong zi and racing dragon boats in honour of Qu Yuan, who is said to have committed suicide(自杀) by drowning himself.
Qu was a minister of the State of Chu _______(situate) in the present day Hunan and Hubei provinces, during the Warring States Period (战国时期)．He was upright, loyal and highly respected.___
____, he was dismissed from office. ___
_ (realize) that the country was in the hands of evil officials, Qu leapt into River Miluo on the fifth day of the fifth month. Nearby fishermen rushed over to save him but were ____
__(able) to recover his body.
The people of Chu _______mourned Qu's death threw rice into the river to feed his ghost ____
___year on the day of his death. But one year, the spirit of Qu appeared and told the mourners that a huge reptile (爬行动物)in the river had stolen the rice. The spirit then advised ____
____to wrap the rice and bind it ___
___throwing it into the river.
During the Duanwu Festival, zong zi is eaten to symbolize (象征,表示) the rice offerings to Qu. And the dragon boat races symbolize _______many attempts to rescue and recover Qu's body.
Breakfast has long been regarded as the most important meal of the day, vital for getting the body going and preventing overeating later on. C to popular belief, the study found the first meal of the day had little impact
snacking or portion sizes later in the day.
The researcher added:“The (信念) that breakfast is the ‘most important meal of the day’ is so widespread
many people are surprised to learn that there is a lack of scientific evidence
(表明）whether or how breakfast may directly cause changes in our health. is certainly true that people who regularly eat breakfast tend to be slimmer and healthier but these
(个人）also typically follow most other recommendations for a healthy lifestyle, so have more
b diets and take more physical exercise.”
In another studyp this month, researchers at Birmingham
d volunteers into three groups. One skipped breakfast, others always ate it and a third continued with current diet. Four months later, no one in any group lost much weight.
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