1.阅读理解

The robots are alive, and now they can reproduce.

Thafs not a continuation to "The Terminator". It's the latest result of research among scientists at Harvard and the University of Vermont. These xenobots, named for the African frog Xenopus laevis, could move around and display collective behavior.

The researchers took stem cells (干细胞)from the skin of frog and put them in salt water, where they came together into balls with a covering of cilia, which are similar to small hairs and enable the organisms (生物体) to move. The scientists noticed that these organisms, xenobots, would collect any particles (粒子) placed in the dish to make piles. They started to wonder whether the tiny robots would do the same thing with individual stem cells, so they conducted a test.

Knowing that xenobots shapes affect their behavior, the researchers tried to figure out which form would help the organism to reproduce repeatedly. They discovered that a "C" shape seemed to be the best. The C-shaped xenobots gathered individual stem cells into groups, which became xenobots of their own. This type of reproduction is based on the organisms movement, rather than growing and then forming a new being as other animals and plants do.

Xenobots are on an unusual line between living organisms and robots. They are organisms because they are made of stem cells and can reproduce. But they are also robots because they can move on their own and perform physical labor. Although most robots are made of metal, robots are given the definition not by their material, but by what they can do.

Before now, Kriegman, a postdoctoral fellow at Harvard University, said, "no one has been using living materials as self-moving, self-powered robots." The researchers hope that the xenobots can help them better understand the process of reproduction 一 a fundamental quality of life — and how to control it. Faced with a world full of self-reproducing problems, such as

Covid-19, Kriegman said studying xenobots could lead scientists closer to solutions.

(1) What inspired the researchers to perform an experiment? A. The position of particles. B. The gathering of stem cells. C. The movement of organisms. D. The collective ability of xenobots.
(2) What is special about the C-shaped xenobots re-production? A. It's repeated constantly. B. It generates new beings. C. It separates individual stem cells. D. It5s based on xenobots5 motion.
(3) How are xenobots defined as robots? A. By their function. B. By their reproduction. C. By their unique component. D. By their physical appearance.
(4) What can be inferred about the research from the last paragraph? A. It could make a breakthrough. B. It would bring scientists closer. C. It could find the secret of reproduction. D. It would discover the solution to Covid-19.
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Do you want to level up your mask-wearing while also looking like you're about to battle with Batman? This is life-wearing Razer Zephyr, a wearable air purifier. A version of Razer's latest appliance made waves in January during the Consumer Electronics Show.

It's no surprise that tech companies are considering a leap beyond the cloth and surgical masks that have come to define the COVID-19 pandemic. It has a hard shell with two belts to fit onto your head. There are two air exchange chambers (腔) on the front, featuring double circulating fans to help circulate cool air. The chambers feature N95 filters providing two-way protection for yourself and those around you. It's also transparent with inside lights and an anti-fog coating to help solve one of the key issues with mask-wearing: watching mouths move when you speak.

Good as the mask appears, will it protect you from COVID-19? According to Razer, the mask is registered with the Food and Drug Administration and lab tested for 99% BFE, or Bacterial Filtraion Efficiency, a measure of how well it filters out bacteria. "It is not tested specifically against the COVID-19 virus, but offers the same functionality and adequate protection due to its 99% BFE rating," Razer's website says.

There's also the financial cost to consider. The mask itself is $ 99, and Razer sells a pack of 10 sets of N95 filters for $30. By comparison, a quick search for surgical masks on Amazon turned up a box of 50 masks for between $11—$14.

"I've tried out the $99 Zephyr for roughly a week now. Wearing the Zephyr feels comfortable. The adjustable head straps (带) allow for the ideal fit. Above all, it feels breathable thanks to the air circulating through its fans." one commented on Amazon.

(1) Why is the Zephyr made transparent? A. To fix lights inside. B. To circulate cool air. C. To test the anti-fog coating. D. To expose mouth movement.
(2) What can be inferred from the third paragraph about the Zephyr? A. It's officially approved. B. It's highly rated by consumers. C. It's specially designed against COVID-19. D. It's adequately protective against all viruses.
(3) What probably appeal(s) to the buyer most according to the comment? A. Its adjustable fans. B. Its air circulating system. C. Its comfortable head straps. D. Its high but reasonable price.
(4) What is the main idea of the passage? A. An innovative mask makes a hit. B. Surgical masks are being improved. C. Wearable technology changes our life. D. A new treatment for COVID-19 is on the way.
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2.阅读理解

New England Fall Leaf Rail Travels

Fall colors and fantastic destinations throughout the East Coast and beyond come to life on fall leaf train tours. New England Fall Leaf Rail Travels through a backdrop of gold, rust and dark red are the best way to experience nature S greatest event as scenic trains take travelers to some of the United States' leading destinations for leaves. Admire the changing colors as you travel aboard heritage and Amtrak train lines and enjoy an up close look at the scenery with coach tours and beautiful passenger liners. Select from a variety of fall leaf trips that highlight colorful destinations through sightseeing tours and attractive trips. Dip yourself in the fall beauty of the Midwest in places like Northern Michigan, where guests enjoy the sights of Mackinac Island and Sleeping Bear Dunes, and Door County, famous for its spectacular Lake Michigan scenery and the endless wide countryside.

Travelers can go to the striking Smoky Mountains, stopping in beloved cities in both

Tennessee and North Carolina. There are also packages that highlight New England in the fall, and these journeys include well- known regional destinations. The rail travels include guided tours in cities like Boston or scenic bus tours along byways. Some of the nation's most picturesque heritage railways are also found in New England, for example, the Conway Scenic Railway in New Hampshire, which travels through the colorful peaks of the White Mountains.

Charge:

Single price: $ 1,400 per person for 6 days

Group (more than one person) price: $ 1,200 per person for 6 days

Accommodation and airline tickets are included.

(1) Which of the following are the highlights of the rail travels? A. The latest trains. B. Colourful leaves. C. The oldest villages. D. Traditional cultures.
(2) What do New England Fall Leaf Rail Travels offer? A. Tour guides in Boston. B. Free pictures of New England. C. A walk in the White Mountains. D. A hands -on climb to the top of the mountain.
(3) How much should you pay in total if you and your friend take the 6 -day tour? A. $1,200. B. $1,400. C. $2,400. . D. $ 2, 800.
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● Ophelia and the Marvelous Boy by Karen Foxe

Type: Fantasy

When Ophelia moves to a strange city where it never stops snowing, she discovers a boy locked away for 75 years in a museum. She must help the boy before the Snow Queen freezes the world. Along the way, Ophelia learns how to believe in things she cannot see. 

Targeted readers: People who like fairy tales would enjoy this book. 

● A Hundred Horses by Sarah Lean

Type: Mystery

During her visits to her aunt and cousins, the wooden horse Nell is stolen by a girl named Angel. As Nell finds out Angels true identity, a bond grows between them and a group of 99 horses. Word has it that the 100th horse is magical. But where is it? Nell doesn't know, but Angel might know.

Targeted readers: Kids who like animals and nature will be sure to find this book exciting. 

● How to Catch a Boggle by Catherine Junk's

Type: Fantasy

Birdie is an orphan who is good at trapping monsters with her singing voice. She is the only goblin hunter (猎人) in the forest. When kids go missing, it's up to her to figure out why.

Targeted readers: Anyone who is looking for monsters will take great pleasure in this book. 

● I Even Funnier: A Middle School Story by James Patterson and Chris Greenstein

Type: Fiction

After a car accident Jamie loses his family, so he moves in with his aunt, uncle and his cousin Stevie, whose basic aim is to trick Jamie. But Jamie keeps having a positive attitude and running after his goals. He has been recently honored the Funniest Kid Comic of New York State. 

Targeted readers: This book would be great for anyone who is fond of humorous books. 

(1) Who tells a story about a girl saving the world? A. Sarah Lean. B. Karen Foxe. C. Catherine Junk's. D. James Patterson and Chris Greenstein.
(2) Nature lovers may take interest in____.    A. A Hundred Horses B. How to Catch a Boggle C. Ophelia and the Marvelous Boy D. I Even Funnier: A Middle School Story
(3) Who goes through life challenges without losing heart? A. Ophelia. B. Nell. C. Birdie. D. Jamie.
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