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Sugar cane（甘蔗）contains around 10% sugar.But that means it contains around 90% non-sugar-the material known as bagasse（甘蔗渣）which remains once the sugar-bearing juice is squeezed out.World production of cane sugar was 185 million tonnes in 2017，which results in a lot of bagasse.
At the moment，most of it is burned.But Zhu Hongli，a mechanical engineer at Northeastern University，in Boston，thinks it can be put into better use.As she，and her colleagues describe，in Matter this week，with a bit of improving bagasse makes an excellent and biodegradable（可生物降解的）replacement for the plastic used for disposable food containers such as coffee cups.
Dr.Zhu is not the first person to have this idea.But previous attempts tended not to survive contact with liquids.She knew from previous research that the main reason why past efforts fell to pieces when wet is that bagasse is composed of short fibres which are unable to hold the finished product.She therefore sought' to insert a suitably long-fibred substance.
Bamboo seemed to be the best choice.It grows quickly /degrades readily and has appropriately long fibres.And it worked.When the researchers blended bamboo remaining into bagasse，they found that the result had a strong crossing of short and long fibres.
To put their new material through its paces，Dr.Zhu and her colleagues first poured hot oil onto it and found that，rather than passing through the material，as it would have with previous，bagasse products，the oil was resisted by their invention.
They also found that when they made a cup out of the stuff and filled it with water heated almost to boiling point，the cup remained unbroken for more than two hours.Though this is not as long as a plastic cup would Hast，it-is long enough for all practical purposes.
（1）What do we know about bagasse？ BB
A．It is widely used.
B．It is usually wasted.
C．It can not be degraded.
D．It takes up 10% of sugar cane.
（2）Why do the previous attempts fail？ BB
A．The cups are not disposable.
B．The fibres of bagasse are short.
C．The plastic can not be replaced.
D．The material is not biodegradable.
（3）What is special about Zhu's invention？ CC
A．It can let oil pass through.
B．It can be boiled in the water.
C．It can hold liquid and resist heat.
D．It can reduce the use of bamboo.
（4）What would be the best title for the text？ DD
A．New Bamboo Containers
B．A New Application of Fibres
C．Young and Promising Materials
D．A Perfect Mix of Cane and Bamboo
【答案】B；B；C；D
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發(fā)布：2024/4/20 14:35:0組卷：2引用：1難度：0.6
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1．British children's writer Roald Dahl ate chocolates and sweets "pretty much every mealtime"，remembers daughter Ophelia Dahl．
After dinner，whether dining alone or entertaining guests，Dahl would pass around a little red plastic box full of Mars Bars，Milky Ways，Maltesers，Kit Kats and much more．
He knew the history of all the sweets and could tell you exactly when they were invented．1937 was a big year when Kit Kats （his favorite），Rolos and Smarties （his dog，chopper's favorite） were invented．He wrote a history of chocolate，lecturing schoolchildren to commit such dates to memory（熟記），such as 1928 when "Cadbury's Fruit and Nut Bar popped up on the scene"，saying． "Don't bother with the Kings and Queens of England．All of you should learn these dates instead．Perhaps the Headmistress（女校長）will see from now on that it becomes part of the major teaching in this school．"
According to Dahl，the Golden Years of Chocolate were 1930-1937．In 1930，Roald Dahl was 14 years old．He was a student at Repton，a famous boys' boarding school in England．It was a tough environment：those in authority were more interested in controlling than educating the students．
Ironically（諷刺地），it was at this difficult period that chocolate became Dahl's passion．Near Repton was a Cadbury chocolate factory．Every so often，Cadbury would send each schoolboy a sampler（樣品）box of new chocolates to taste and grade．They were using the students---"the greatest chocolate bar experts in the world to test out their new inventions．
This was when Dahl's imagination took flight．He pictured factories with inventing rooms with pots of chocolate and fudge（軟糖）and "all sorts of other delicious fillings bubbling away on the stoves"．
"It was lovely dreaming those dreams…when I was looking for a plot for my second book for children．I remembered those little cardboard boxes（紙盒）and the newly invented chocolates inside them，and I began to write a book called Charlie and the Chocolate Factory．"
For the record，Roald Dahl did not like chocolate cake or chocolate ice cream．He said， "I prefer my chocolate straight．"
（1）What's the purpose of the first paragraph？
A．To introduce the main topic---Roald Dahl．
B．To introduce Dahl's love for chocolate．
C．To introduce main character's daily life．
D．To introduce some important characters．
（2）What can we infer from the passage about Roald Dahl？
A．He treated himself with various chocolate after dinner secretly．
B．He has a good knowledge of chocolate，especially its history．
C．He used to lecture schoolchildren of a boys' boarding school．
D．He only wrote some books related to the history of chocolate．
（3）What happened during the Golden Years of Chocolate？
A．It was a great time for children to get educated．
B．Those years stopped Dahl's interest in chocolate．
C．Students could become chocolate experts then．
D．Roald Dahl's passion for chocolate was lit up then．
（4）gave Roald Dahl inspiration to write Charlie and Chocolate Factory．
A．the dream about chocolates．
B．Factories with chocolate and fudge．
C．Those boxes with chocolate．
D．Chocolate cakes and ice cream發(fā)布：2025/1/30 8:0:1組卷：0引用：1難度：0.5 -
2．Recently，a film star has been giving away free books on the London Underground．If you're a bookworm，a Harry Potter fan and a London Underground user，then it's been an exciting month for you．
Emma Watson，who starred in films based on the novels about a fictional schoolboy wizard，has been hiding books on the Tube for passengers to read through．
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The 100 or so books Watson left for passengers to read were even more special because she left a hand-written inscription（題詞）．The books were Kaya Angelou's Mom & Me & Mom．
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So．Why not take a leaf out of Emma Watson's book and leave a copy of your favorite book on a train？It could make a stranger's life richer．
（1）What does Books On The Underground aim to do？
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（2）Which of the following statements is NOT true？
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（3）What's the author's attitude towards Emma Watson's leaving books on the train？
A．critical
B．indifferent
C．supportive
D．pessimistic發(fā)布：2025/1/30 8:0:1組卷：0引用：1難度：0.5 -
3．It can be really hard to learn a new language．I had always enjoyed learning languages in school，but only recently did I start learning German．I found that I could understand and learn individual words easily，but when it came to literature，I really struggled．That was when my tutor at university suggested reading some children's books printed in the target language．
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If you can find a translation of the books you have read as a child，I would strongly advise reading those if you are a complete beginner．However，if you feel a bit more confident reading in English，I would personally recommend the series of 'Harry Potter' books by J．K．Rowling or any of the Roald Dahl children's books．
（1）What makes it hard for the author to learn German？
A．The author had a poor memory．
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（3）What does the author try to express mainly in Paragraph 3？
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（4）Why does the author write this text？
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D．To share the author's stories of learning a new language．發(fā)布：2025/1/30 8:0:1組卷：5引用：1難度：0.5