3. She her bag and took out a couple of coins.
科目：高中英語 來源： 題型：
C
The eventual extinction of the large prehistoric animals has always attracted researchers. However,it is impossible to recreate most of them,either because the fossilized(變成化石的) C>NA is too old (dinosaur) or just not available. But the one exception may be the woolly mammoth,which lived about 8,000 years ago.
Thanks to their relatively recent disappearance and the ice-cold weather they lived in,plenty of well-preserved specimens(標本) have been discovered. In the last few years,scientists have been able to piece together the mammar's genetic code(遺傳密碼) using some frozen hair and also recreate its blood,with the help of DNA that was found preserved in the bone. Now,a group of Japanese scientists want to take it one step further and bring the mammoth back to life.
The team of scientists plan to start with a journey to Siberia this summer,to seek out the DNA from a flash-frozen specimen of the mammal. In case they are unable to find one,they will use the tissue of a preserved mammoth that currently sits in a Russian laboratory.
The scientists will join the mammoth s DNA with an empty egg of the mammoth's closest present-day relative — the elephant. Then,by using an electric current,they will trick the egg into growing and dividing. After a few days,the researchers will put it inside a female elephant, which will act as a surrogate mother(代孕母親) .
Then begins the waiting game — for it takes about 600 days,for an elephant or in this case a woolly mammoth baby,to fully develop — that is,if everything goes well and the surrogate mother doesn’t reject the egg.
If luckily we do get a baby mammoth,scientists are not sure if they would produce more,but they are hoping they will be able to study it and answer the age-old question of how they became extinct — were they hunted down by humans or did they die because of climate change?
Will the woolly mammoth come back to life? We have to wait and see.
28. The remains of the woolly mammoth are kept well partly due to .
A. their long hair B. their big size
C. the coldness D. human activity
29. Why do the Japanese scientists plan to go to Siberia?
A. To find suitable DNA.
B. To preserve the specimen.
C. To recreate the mammoth's blood.
D. To seek help from the Russian scientists.
30. The fourth paragraph mainly deals with .
A. the future of the cloned mammoth
B. the process of cloning the mammoth
C. the difficulty the scientists are faced with
D. the relation between the mammoth and the elephant
31. If the scientists’ efforts pay off,we are most likely to.
A. clone a lot of mammoths
B. bring dinosaurs back to life
C. know the effects of climate change
D. find out why the mammoth died out
查看答案和解析>>
科目：高中英語 來源： 題型：
B
The latest technology inventions in 3D printing are rapidly changing how things are being made.
At the International Manufacturing (制造業) Technology Show in Chicago,a little-known car maker became popular by manufacturing a car at the show.
It was a fully functional car that was 3D printed in 44 hours and assembled(裝配) in two days. The car is called a “Strati”，Italian for layers,so named by its designer Michele Anoe because the entire structure of the car is made from different layers of materials.
The average car has more than 20,000 parts but this latest technology reduces the number of parts to 40. uThe goal here is to get the number of parts down and to drop the tooling costs to almost zero,” said John B. Rogers Jr.? chief manager of Local Motors. “Cars are ridiculously complex,” he added,referring to the thousands of bits and pieces that are sourced,assembled and connected to make a vehicle.
This technology can use a variety of materials to manufacture anything in complicated detail. Imagine if you could order a new car online according to your needs and pick it up of have it delivered to you the next day at a small part of the cost of buying one from a shop? What if you could make small parts at a lower cost rather than buying them from a parts supplier? What a great change would that be for the industry? It's already happening.
One of the challenges with collecting antique (古老的) cars is replacing parts. You can't buy them because they're not in use and it's difficult to find the parts that fit. But now people can use 3D printing technology to make parts for their cars.
John B. Rogers Jr. believes that in the near future a car will be made in just 60 minutes. The company is already organizing a worldwide network of “Microfactories” where you can order and pick up your personalized car.
25. What impressed people deeply at the show?
A. A car maker.
B. A 3D-printed car.
C. The variety of cars.
D. Technology inventions.
26. What do we know about the “Strati” car?
A. It's a model car.
B. It was made in Italy.
C. It has over 2 ,000 parts.
D. It was made within four days.
27. The questions in Paragraph 5 are raised to.
A. analyse the latest technology
B. challenge traditional car makers
C. explain how the change happened
D. show the advantage of the technology
28. What is John B. Rogers Jr's attitude towards the technology?
A. Positive. B. Doubtful.
C. Surprised. D. Disappointed.
查看答案和解析>>
科目：高中英語 來源： 題型：
第二節:書面表達(滿分25分)
假定你是李華，在美國某所中學做交換生。當地的某志愿者協會準備組織一次去養老院志愿服務的活動，目前正在招募志愿者并就活動方案征求意見。請你用英語給該志愿者協會寫一封信，申請參加此次活動。內容主要包括：
1. 表明寫信目的;2. 說明應征條件或優勢;3. 提出活動方案設想。
注意：1. 詞數100左右(開頭和結尾己給出，但不計入總詞數) ；
2. 可適當增加細節，以使行文連貫。
Dear Sir or Madam,
I am glad to hear that you re calling for volunteers to do something for the elderly in nursing homes. Yours,
Li Hua
查看答案和解析>>
科目：高中英語 來源： 題型：
4. Chemicals are very dangerous,so we’d better keep them out of r of the children.
查看答案和解析>>
科目：高中英語 來源： 題型：
1. All the people are (concern) about the growth of the younger generation.
查看答案和解析>>
湖北省互聯網違法和不良信息舉報平臺 | 網上有害信息舉報專區 | 電信詐騙舉報專區 | 涉歷史虛無主義有害信息舉報專區 | 涉企侵權舉報專區
違法和不良信息舉報電話：027-86699610 舉報郵箱：58377363@163.com
