题目内容

【题目】听下面一段较长对话,回答以下小题。

1Where does the conversation probably take place?

A. In an office. B. At home. C. At a restaurant.

2What will the speakers do tomorrow evening?

A. Go to a concert. B. Visit a friend. C. Work extra hours.

3Who is Alice going to call?

A. Mike. B. Joan. C. Catherine.

【答案】

1C

2A

3B

【解析】

此题为听力题,解析略。

1此题为听力题,解析略。

2此题为听力题,解析略。

3此题为听力题,解析略。

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【题目】 Laboratory studies have shown that prolonged exposure to high intensity blue light damages retinal (视网膜的) cells in mice.1So, why is there the disconnect between blue light's effects on rodent(啮齿类动物) eyes and human eyes?

2We have protective elements, such as macular pigments (黄斑色素) and the natural blue-blocking ability of the crystalline lens (晶状体). These structures absorb blue light before it reaches the delicate retina.

Just because blue light isn't harming your retina, it doesn't mean your electronic devices are harmless.3Mounting evidence suggests that screen time before bed increases the time it takes to fall sleep. It also robs you of restorative rapid-eye movement seep, dulls focus, and reduces brain activity the next day.

4

First, turn off your electronic devices before bed. Outside of the bedroom, when you do look at your screens, lower the brightness.

Second, follow the“20-20-20”rule The American Optometric Association(美国验光学会) defines this rule as taking a 20-second break every 20 minutes to look at something 20 feet in the distance. 5

Third, use lubricating eye drops before extended computer use. This method will build up the body's natural tears and keep the eye's surface water-bearing.

A.This will allow your eyes to relax.

B.Human eyes are different from rodent eyes.

C.That's why it's so important to have your eyes tested regularly.

D.Because of is wavelength, blue light dos disrupt healthy sleep physiology (生理机能).

E.But epidemiological (流行病学的) studies on real people tell a different story.

F.Consumers often don't think about the impact digital devices might have on their vision.

G.There are ways to make your screen viewing more comfortable and more helpful to seep.

【题目】Dr. Ellen Bronson of the Maryland Zoo in Baltimore always wanted to work with animals. Unlike many animal- loving little girls, though, her first idea was to be a naturalist. If a naturalist is someone who sits in the woods and observes animals and takes notes, then that’s exactly what she was doing at the time. Dr. Bronson grew up “in the middle of now here”, and her parents didn’t let her watch TV. “So I spent a lot of time hanging out in the woods because there was not a lot to do otherwise,” she says. “I had a funny notebook that my parents still have, w here each page is about a certain animal.”

When she got a little older, being an animal doctor seemed like a better choice than working with animals in the forest, and the success in giving medical help to them satisfied her hugely, but she says that even the cases that don’t work out as well can be meaningful. “You also have the failures, which are hard at the time, but they help not just you but the whole zoo learn,” She says.

And, of course, another advantage of the job is getting to work with really cool animals. “I really like the animals that feed on meat — they’re very tough, and you can get them through hard times,” she says.

Finally, another advantage of her job is how often she gets to work with an animal over its life. “We’re there doing medical examination when they’re born, we watch them grow up,” she says. “And we watch them as they age. We help them age peacefully and help them be pain-free, and then we’re also there when they die. That is something very special.”

1What can we learn from the second paragraph?

A. Giving animals medical help is always Ellen’s dream.

B. Even failures can also mean something to Ellen.

C. Failures in work are hard for Ellen to accept.

D. Observing animals gives Ellen greater satisfaction.

2In her work with animals, she can .

A. earn fame and respect from her work.

B. realize her dream of becoming a naturalist.

C. take care of many animals from birth to death.

D. keep all the animals in peace and free from pain.

3Which of the following best describes Dr. Bronson?

A. Generous. B. Well-educated. C. Grateful. D. Caring.

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