题目内容

【题目】— My grandson really loves this place. There is so much children can do here for _________.

— Good for him.

A.decorationB.recreationC.immigrationD.association

【答案】B

【解析】

考查名词辨析。句意:——我孙子非常喜欢这个地方。孩子们可以在这里做很多娱乐活动。——这对他有好处。A. decoration装饰; B. recreation娱乐;C. immigration移居;D. association联合。根据“My grandson really loves this place.”可知此处表示“娱乐”,故B项正确。

练习册系列答案
相关题目

【题目】 Wood has many great characteristics that make it the perfect building material. It is cheap, durable(耐用的), easily available, and most importantly, environmentally sustainable. The one thing it is not, is transparent(透明的).Now thanks to a team of scientists at Stockholm’s KTH Royal Institute of Technology, the material may even be able to add that feature to its already impressive list.

Lead researcher Dr. Lars Berglund said he was inspired to create the transparent wood after learning how Japanese researchers had developed a see-through paper for use in flexible display screens for electronic devices.

The team began by pulling out the wood’s lignin (木质素). The lignin-free wood was then dipped into a polymer (聚合物) and baked at a temperature of 158F for four hours. The result was a hybrid product that was not only stronger and lighter than the original wood but also, almost transparent. The researchers were able to adjust the level of transparency by varying the amount of the polymer injected and also by changing the thickness of the wood.

While scientists have previously created a see-through wood for small-scale applications like computer chips, the transparent wood is the first one being considered for large scale applications. The researchers, who revealed their findings in Biomacromolecules on April 11, picture using the transparent wood in buildings to allow for more natural light, or to create windows that let in the desired amount of light without sacrificing privacy.

Wood that allows light to pass through could lead to a brighter future for homes and buildings. Berglund also thinks the wood could play a significant role in the design of solar panels. The semi-transparent material would be able to keep light longer and give it more time to interact with the conductor, thus resulting in better solar efficiency.

Additionally, substituting the currently used glass with this new product would help solar energy manufacturers improve their carbon footprint and lower the cost. They are now experimenting with ways to scale up the manufacturing process so that the transparent material is cost-effective to make and easy to use.

1What does the underlined part "that feature" in Paragraph 1 refer to?

A.Cheapness.B.Durability.

C.Sustainability.D.Transparency.

2Which of the following is not the process in which the transparent wood is made?

A.Dip the wood into a polymer.B.Reduce the amount of the polymer.

C.Make the wood lignin-free.D.Bake the wood for some time.

3What’s the purpose of using the transparent wood in buildings?

A.To protect privacy.B.To scale out applications.

C.To get more natural light.D.To observe more clearly.

4What is the last paragraph mainly about?

A.The bright future of the transparent wood.

B.The wood’s role in the design of solar panels.

C.The disadvantages of the currently used glass.

D.Solar energy manufacturers’ carbon footprint.

【题目】 From talking robots and video phones, technology has become so advanced that the previously impossible seems to occur on a daily basis. And yet—we still have no cure for the common cold.

Why can’t we stop the common cold? According to Peter Barlow, a scientist at Edinburgh Napier University, the main challenge lies in the many different types of cold viruses that are produced by the rhinoviruses (鼻病毒). There are at least 160 types. They change so easily that they quickly become resistant to drugs. In other words, a single cure isn’t likely to work on every type of cold.

However, researchers from Stanford University have found a possible answer. They discovered a protein that the viruses need. Without it, they can't spread inside your body.

To identify the gene which produces the specific protein needed by the viruses, researchers used a gene-editing technique to test all genes one by one for thousands of cells. These modified (改变的) cells were then exposed to a range of rhinoviruses which cause the common cold.

All the viruses were unable to copy inside cells without a gene that produces a specific protein, called methyltransferase (甲基转移酶) SETD3.

Then, they tested genetically modified mice, which were completely unable to produce the protein. The mice were able to live healthy, normal lives without the protein.

“Lacking that gene protected the mice completely from the common cold,” associate professor Jan Carette, from Stanford, told the BBC.

“These mice would always die, but they survived and we saw a very strong protection.”

Carette said the plan is to find a drug which can keep back the protein for a limited time, rather than produce genetically modified humans.

“We have identified a fantastic target that all rhinoviruses require and depend on. Take that away and the virus really has no chance,” said Carette.

1Why does the author mention talking robots and video phones in the first paragraph?

A.To stress the importance of technology.

B.To encourage readers to share their ideas.

C.To introduce the topic of the text.

D.To recognize the progress of science.

2What can we learn about the protein needed by the viruses?

A.It helps the viruses copy inside our bodies.

B.It stops the viruses from changing easily.

C.It protects the viruses against drugs.

D.It forces the viruses to spread fast.

3What does Jan Carette intend to do?

A.To identify a fantastic target.

B.To slow copying speed of some genes.

C.To produce genetically modified humans.

D.To find a drug to temporarily block the protein.

4What is the best title for the text?

A.A New Experiment on Viruses.

B.New Defense Found for Viruses.

C.A Chemical Curing Modified Viruses.

D.Gene-editing Technology to Control Viruses.

【题目】 While we are burning hot here, it is winter in South America. The Andes Mountains are situated along the Argentina-Chile border. Once the first snow falls of early June start lo drop, skiers are ready to enjoy the nightlife of ski towns all along the border.

Caviahue

Meaning “site of gathering and celebration”, this spot draws people with its long ski season, natural beauty, and hot springs.

Season: June 15th to September 30th

Tel/Fax: 0114314-8212/9180

Website: http://www.caviahue.com

Cerro Castor

The newest ski resort in Argentina, this winter playground is near Ushuaia—the world's southernmost city. The stable and cold temperatures of Castor allow it to offer the longest ski seasons in South America.

Season: June 17th to October 16th

Phone: 54 290-1499301

Fax: 54 290-1430680

Website: http://www.cerrocastor com

Perito Moreno

This resort features 11 skiable kilometers divided into 9 tracks, a double 1, 000-mcter-long chairlift line that joins the 900-meter-high and the 1,350-meter-high areas, where snow is guaranteed throughout the winter.

Season: From June 15th to October 5th

Phone: 54 294-4409000

Fax: 54 294-4409000, int. 118

Website: http:// www.cerro-periiomoreno.com

Cerro Catedral

Cerro Catedral was one of the first ski resorts in Argentina. Cerro Catedral has continued to gain a reputation for itself-all the while updating its facilities. The resort has 39 lifts, which allow access to 600 hectares (公顷)of skiable surface divided into 53 well-signaled runs of various difficulties.

Season: From June 18th to October 10th

Tel/Fax: 012 4672-2947/7672

Website: http:" www.catedralaltapatagonia.com

1Which number should you call if you want to take a hot spring bath?

A.54 294-4409000B.54 290-1499301

C.0124672-2947/7672D.0114314-8212/9180

2Which of the following offers the longest ski season?

A.CaviahueB.Cerro Castor

C.Perito MorenoD.Cerro Catedral

3What's the feature of Cerro Catedral?

A.Cultural appeal.B.Beauty and comfort.

C.Advanced equipment.D.Historical significance.

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网