1 . When you think of the Arctic, you imagine an icy land of pure white snow, which is considered to be the last really clean place     1    (leave) on Earth. Yet plastic trash has now reached the remote regions of the Arctic and the Alps. A team of     2    (scientist) has discovered large quantities of microplastics(微塑料) — very small pieces of plastic waste — in the Arctic snow. While microplastics have been found in sea-water, drinking water, and even in animals over     3     past several years, this is the first study to show microplastics in snow,     4     indicates it is an airborne pollutant that must be paid attention to. 

The researchers state that microplastics in snow suggest that microplastics may be in the air that we     5    (breath). Therefore, it is really important     6    (assess) if microplastics also reach lung tissues.

Previous research has found that they flow over long distances and into our oceans,     7    (damage) ecosystems along the way. They start in our wastewater, when we wash clothes     8     plastic fibers. The wastewater then flows into rivers and out to sea, where they     9    (eat) by sea animals. If people then eat these animals, it means that we’re     10    (probable) eating the plastic as well.

2 . This holiday season, holiday shoppers can for the first time send festive greetings that contribute to protecting rather than destroying our evergreen world. The beautiful e-card can be sent via TreeGreetings, available at http://www. TreeGreetings. com.

Each $8.95 TreeGreetings e-card comes with a virtual tour of the actual location where the gift tree will be planted along with a full-color, personalized planting certificate. The greetings feature musical slide shows with nature photography and inspirational messages.

“Our cards exemplify the spirit of holiday giving,” said Alan Shamir, founder and CEO of Your True Nature Inc., which markets TreeGreetings electronic products. “Our customers can give back to the Earth by contributing to reforestation while sharing holiday goodwill with friends and family.” TreeGreetings offers a full range of e-cards to celebrate any occasion including birthdays, weddings, anniversaries, new homes, congratulations, Valentine’s Day, Mother’s Day, and Father’s Day.

Individuals and organizations can easily send personalized TreeGreetings to their entire holiday lists at quantity-discounted rates, and distribution on a selected date can be scheduled days, weeks, or months in advance.

Gift trees are planted and cared for by well-established, reliable non-profit organizations including the internationally recognized Trees, Water & People, which has planted 1.2 million trees in Central America, and Plant-It 2020, a foundation created by singer John Denver in 1992.

After having received a Magnolia tree for his 11th birthday, Shamir gained a lifelong appreciation for the value and joy of receiving a living growing gift. He said, “My tree and I ‘grow up’ together! It has been such a valuable and important part of my life that I want to give others the experience of having a tree planted for their special occasions.”

1. What will happen if you buy a TreeGreetings e-card?

A．You will be presented with a gift.

B．You’ll receive a photograph with music.

C．You can determine the type of gift trees.

D．You’ll know where the tree will be planted.

2. What can we infer from Para. 3?

A．TreeGreetings e-card brings high profits.

B．TreeGreetings e-card does prove popular.

C．TreeGreetings e-card helps protect the Earth.

D．TreeGreetings e-card deserves to be stored.

3. What do we know about John Denver from the 5th paragraph?

A．He has a high fame worldwide.

B．He must be possessing a big farm.

C．He founded Plant-It 2020 himself.

D．He’s abandoned singing completely.

4. Why did the author mention Shamir’s 11th birthday?

A．To show it has a lasting influence on him.

B．To emphasize he didn’t get gifts ever before.

C．To call on people to value teenagers’ growth.

D．To collect data for his support for the project.

3 . Rescue workers and thousands of volunteers are not the only ones who have won hearts and minds for their heroic efforts in the search for survivors after Tuesday's powerful earthquake in

Mexico. Fifteen dogs from the navy's canine（军犬）unit have assisted this week in the rescue efforts at the sites of collapsed buildings across Mexico City, where more than 50 people have been pulled alive from the ruins.

Of the canine heroes none is more famous or loved than Frida, a six-year-old white Labrador who in her distinguished service has won praise for her ability to detect people who have been trapped by various natural disasters. Over her admirable career she has found 52 people including 12 survivors in Mexico and other Latin American countries.

This week, Frida and Evil and Echo—two Belgian Shepherds that have also been specially trained for rescue efforts一were sent to the site of the collapsed Enrique Rebsamen School in southern Mexico City.

Equipped with goggles that protect her eyes from dust and smoke, boots to prevent damage to her paws while she climbs over rough ruins, Frida took to her work looking every bit the part of the ruins.

If Frida detects the presence of a survivor, she is trained to bark to alert rescue workers but if she detects a corpse she stops suddenly before proceeding, her handler explained.

Eleven children were rescued from ruins at the school but this time human rescue workers rather than the dogs were the ones who located them.

However, that hasn't stopped Frida from becoming a social media star and reaching a new level of fame this week. Videos and other social media posts that highlight the work of Frida and her impressive record of detecting people trapped by natural disasters spread quickly online.

While she has yet to detect anyone trapped in the ruins this week, she and other rescue dogs are continuing to work tirelessly, searching through spaces that humans cannot reach. With the possibility that there are still people trapped alive, time will tell whether she adds to her rescue record.

1. Which of the following is the best title for the passage?

A．Severe earthquakes in Mexico	B．Undertaking rescue work.
C．People waiting for rescue	D．Special rescuers in Mexico.

2. What makes Frida a social media star?

A．Her rescue records and tireless work.

B．Her cooperation with the rescue team.

C．Her cool appearance with some special devices.

D．Her ability to search spaces beyond humans' reach.

3. What does the underlined word "corpse" in paragraph 5 probably mean?

A．An article of clothing.	B．An unconscious animal.
C．A dead person.	D．A special signal.

4. It can be inferred from the last paragraph that_______ .

A．Frida will achieve nothing

B．Frida will probably work miracles

C．more dogs will be sent to the area

D．the rest of the rescue will be done by dogs

4 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Every Wednesday at 7 pm, a group of running enthusiasts from different countries gather at a bar in Shanghai before setting     1     on their 5-kilometer run. But this is no ordinary run. These people     2     (arm) with trash (垃圾) bags. The members of this group don’t simply run for the sake of good health. They do it for the sake of the Earth     3    well.

Called “plogging”, this new fitness activity originated in Sweden in 2016 and was introduced to Shanghai in 2018. The term is a combination of the words “jogging” and “plocka upp”,     4     means “pick up” in Swedish.

By the summer of 2018, just a few months after Trash Running China was founded,     5     (it) WeChat group had grown to include more than 400 runners. To make the activity more fun for both     6     (newcomer) and regular ploggers, Trash Running China also     7     (frequent) organizes longer weekend runs in the suburban areas. “We want more people to hold small ‘plogging’ groups and have a     8     (responsible) to organize trash running activities in their own neighborhoods,” says Eisenring, who founded Trash Running China. “ ‘Plogging’ is a way     9     (know) the people and the city a bit more,” says Robbin Trebbe, one of the     10     (late) runners to join the group.