【题目】 Oscar Valera likes to use 3D printers to build a collection of crafts (模型), but he is now turning his hobby toward the fight against the coronavirus pandemic (新冠大流行).

In just four days, the New Jersey high school teacher has printed and distributed 200 face masks to medical professionals across the country, including Florida and Texas. He is far from done. “One woman told me what you’re doing right now is giving people peace of mind. You’re probably saving lives,” said Valera, who found a mask design posted online.

Demand for face masks, along with N95-masks and other personal protective equipment (PPE) has increased with the surge (大量涌现) of patients infected with the highly infectious virus. That has prompted volunteer 3D printers like Valera to step in to support doctors, nurses and first responders, who are all in danger of contracting the sometimes deadly illness.

In Sunnyvale, California, community workspace nonprofit Maker Nexus has been running its 13 3D printers and three laser cutters (激光切割机) nonstop. The company produced 1,800 masks for local hospitals and now has requests for another 13,000.

Elsewhere in Silicon Valley, more companies are joining in. Fremont-based PrinterPrezz, a 3D-printing medical device contract manufacturer that specializes in metal spinal implants, switched production to printing PPE after getting a request from nearby Washington Hospital Healthcare System.

Snap Lab, a unit of Snap Inc, is also producing face masks to donate to hospitals. In New Jersey, Valera said he will continue to do his part. “I don’t mind doing this,” Valera said. “I just hate the fact that I have.”

1What do we know about Oscar Valera?

A.He is a professional craftsman.

B.He is helping medical worker to save lives.

C.He adopts the online mask design.

D.He is forced to print face masks.

2How many enterprises are mentioned to help produce medical equipment?

A.2.B.3.C.4.D.5.

3What’s the tone of the author when reporting the news?

A.Concerned.B.Critical.

C.Objective.D.Enthusiastic.

4What’s the best title of the passage?

A.A Teacher’s Creativity to Produce Masks.

B.3D Printers Help Make Face masks.

C.Face Masks Are in Great Demand.

D.The Fight Against the Pandemic.

【题目】 Climate change has already begun to impact our planet in more ways than we can think.

1 Saving the environment starts with us and it is our responsibility to act against these terrible changes to preserve the planet for future generations.

Make your commute green. Millions of people drive to work every day. 2 However, the downside to this is that millions of cars emit greenhouse gases that destroy our atmosphere. There are always other options that you can utilize to make your commute to work eco-friendly. For starters, taking public transportation to work is a great way to cut out emissions. Riding your bike to work is also incredibly helpful to the environment and is a great method to get exercise.

Be more conservative with energy usage. Becoming more energy efficient is a great way to prevent pollution. 3 Make sure to turn off lights and unplug devices that you are not using anymore when you are done with them. Replace your light bulbs with energy-efficient light bulbs to help you save electricity too.

Recycle. Manufacturing plants emit a large number of greenhouse gasses per year. It is unavoidable in the production of goods that we use on a regular basis. However, a cleaner alternative would be to invest in recycling. 4 The professionals will take these items to a processing plant where they will be remade into other recyclable materials again.

5 Focusing your efforts to spread awareness about renewable energy is the best way to create a positive impact in your community. By informing others about how renewable energy is better than fossil fuels (化石燃料), you will persuade others into investing in the idea.

A.Educate yourself and others.

B.Encourage the use of renewable energies.

C.It’s simply unavoidable in our modern-day society.

D.Be sure to collect your abandoned paper, plastic and electronics.

E.Fortunately, there are always things we can do to fight against it.

F.This requires you to cut down on energy usage in your household.

G.Recycling is a cost-effective and eco-friendly process that eliminates waste.

【题目】 How to live a happy life? The following suggestions may be of great help to you.

Keep positive. 1 Optimists have a 35% less chance of having a heart attack or stroke, are more likely to eat a healthy diet and exercise regularly, have stronger immune systems and even live longer. If you face a challenge or obstacle, you’re more likely to see it as a temporary or even optimistic thing, allowing you to learn and grow.

Start volunteering. 2 It can reduce the risk of cognitive (认知的) disorder. It can even help us live longer. Even if you have a little time to offer, just the act of giving has been shown to improve your health, possibly by temporarily reducing your sense of pain.

Be grateful. Counting our blessings protects us against anxiety and depression and boosts optimism. One of the best ways to make thankfulness a part of your life is to keep a journal. 3 Keeping gratitude and recording your good deeds may help you live happily.

4 People who are more socially connected to family, friends and community are happier. They’re physically healthier, and they live longer than people who are less connected. High-conflict marriages, without much affection, turn out to be very bad for health, perhaps worse than getting divorced. 5

A.Eat healthily and happily.

B.Strengthen social connections.

C.Looking on the bright side of life is really good for you.

D.You can set down some positive experiences in your diary.

E.Instead, living in good relationships is beneficial to health.

F.Studies show volunteering can reduce stress and depression.

G.You’ll have no time to volunteer and give thanks in your life.

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