5 . When Makayla Nunn was 8, she was diagnosed (诊断) with an illness called chronic (慢性的) fatigue syndrome. People with this condition are always affected by extreme tiredness. The feeling doesn't go away when they sleep or rest. Makayla lives in the United Kingdom. Because of her illness, she had to give up some of her hobbies.

On her doctor's orders, she started spending no more than three hours at school each day. She soon fell behind in her studies, and she missed her friends. “I would love to see them more,” Makayla, now 15, told TIME for Kids. Then Makayla's mom introduced her to a tool that would help her keep on top of schoolwork and stay connected to friends. It was a robot called AV1. AV1 is 11 inches tall and weighs about two pounds. The robot was developed to help kids who have a chronic illness.

Now, when Makayla can't make it to school, AV1 takes her place. If she feels well enough to take part in a lesson, she opens an app on her phone. She uses AV1's camera to see what's happening in the classroom.

AV1 isn't the only technology that lets kids who are sick attend school remotely (远程地). But AV1 is specially designed to encourage social interaction. The robot's expressive eyes let Makayla show emotions (情绪) to people such as happiness or sadness. The whisper function allows her to speak with friends in class. And AV1 is easily carried, so Makayla's friends can take it with them during breaks or on social outings.

Makayla's classmates nicknamed her robot Robbie. One staff member even made Robbie a coat so it wouldn't get cold.

Karen Dolva cofounded No Isolation, the company that makes AV1, in 2015. “When you're not in school, you miss out on all these small, magical moments and interactions,” Dolva told TIME for Kids. “AV1 helps you stay active in the conversation.”

1. How does Makayla differ from common people?

A．She is fighting against a deadly illness.	B．She never falls asleep at night.
C．She hates going to school.	D．She always feels very tired.

2. What did Makayla's doctor ask her to do?

A．To get homeschooled.	B．To turn to a robot for help.
C．To stay at school for a limited time.	D．To talk to her classmates more often.

3. What can we learn about AV1?

A．It is designed for disabled kids.	B．It can do schoolwork for kids.
C．It is hard to carry around.	D．It can express emotions.

4. What do Karen Dolva's words in the last paragraph mean?

A．AV1 can communicate with people everywhere.

B．AV1 can help people in social activities.

C．AV1 has been tried out many times.

D．AV1 has been widely used in class.

7 . Dry eye—a condition that occurs when your eyes don't produce enough tears, the tears don't work correctly or they evaporate (蒸发) too quickly—is much more than a bother. “The burning can feel like sand is in your eyes, and this can cause eye tiredness, light insensitivity, and blurry vision," says Angela Bevels, a doctor in Tucson, Arizona.

Nearly 16 million Americans may have dry eye, according to the National Eye Institute. Anyone can develop the problem, but it's more common in women and people over 50.

Sometimes dry eye is a temporary condition caused by a variety of irritants (刺激物). But it can be constant, too, when caused by immune system diseases. Skin issues on or around the eyelids and diseases of the glands (腺) in the eyelids are also common contributors. People who wear contact lenses (隐形眼镜) or have had eye surgeries are also at a higher risk.

Some lifestyle changes can minimize the discomfort. First, take frequent breaks from staring at computer and phone screens, which may cause tears to work overtime, according to Aditya

Kanesa-thasan, MD, an eye doctor at the Wills Eye Hospital in Philadelphia.

Turn off fans or other direct air to your face, as this can increase the evaporative loss of tears as well, he says. Eight to ten glasses of water every day can also play a role in keeping your eyes lubricated (润滑的).

Over-the-counter eye drops can help ease symptoms. But when these solutions don't provide relief or you find you're using drops more than six times a day, it's time to see an eye doctor for treatments.

1. What do we know about dry eye according to passage?

A．It is a temporary condition.

B．It is caused by eye weakness.

C．It will make you unable to sense light.

D．It may be caused by immune system diseases.

2. Which group of people are more likely to have dry eye?

A．People under 50.	B．People with skin issues.
C．People wearing glasses.	D．People having done eye surgeries.

3. What should people with dry eye do?

A．Use eye drops more often.	B．Avoid using phones or computers.
C．Drink enough water every day.	D．Go to the doctor for eye surgeries.

4. What's the best title for the passage?

A．Coping with Dry Eye	B．Tips for Eye Health
C．Caring for Your eyes	D．Causes of Dry Eye

8 . Nail biting is a common habit. A lot of people tend to bite their finger nails when nervous and anxious. It is a good way to reduce their stress. However, nail biting affects 30 percent of adults, 45 percent of teens and 30 percent of children. It can invite bacteria to enter the body and the blood, increasing your chances of catching a cold or the flu, according to the Mayo Clinic. Not to mention that it can ruin your smile.

The most common virus hiding under your nails is staphylococcus, which can enter the body through breaks in your skin after you bite your nails. If that is not enough a warning, just imagine parasites, hanging out in your nail tissue as you open mouth and put in your finger. So next time the anxiety comes in, try taking five deep breaths instead.

According to the Center for Disease Control, there are more than 200 cold viruses floating around at any given time. You may get one because of exposure to the sick. However, you can reduce your chances of catching a virus by keeping your hands away from your mouth. Viruses that cause the cold are active on your skin as well, so often wash your hands with soap and water, and avoid nail biting by chewing gum.

Nail biting can also damage the teeth. Check with your dentist whether having a mouth guard can help you to stop biting your nails or at least reduce some of the damage it can cause. She may be able to suggest some other ways to help you give up the habit for good.

1. Who is most likely to be affected by nail biting?

A．The 16-year-old Bob.	B．The second grader Gene.
C．The seven-month-old Jane.	D．The mother of five children, Kate.

2. What does the author mean by mentioning staphylococcus and parasites in Paragraph 2?

A．You should be careful of the nail.	B．Nail biting harms your health a lot.
C．Deep breaths are useful to keep calm.	D．People lack warnings about biting nails.

3. Which of the following can keep you from cold viruses?

A．Avoiding chewing gum.	B．Washing your face often.
C．Going to a dentist often.	D．Staying away from the sick.

4. What might be the best title of the passage?

A．Nail Biting Is a Common Habit	B．Nail Biting Can Reduce Stress Well
C．Nail Biting Ruins Your Health and Smile	D．Nail Biting Should Be Checked with a Dentist

9 . 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。

Someday it may be possible for people to tackle their food allergies    1     (simple) by brushing their teeth.     2     New York City-based company has launched a trial to test this concept in food allergy sufferers. The idea is to expose users to small numbers of an allergen daily     3     (build) and maintain tolerance to it.

An existing treatment that delivers allergens through under-the-tongue liquid drops     4     (offer) decent protection. But it can be hard for users to keep up this daily routine.

Allergist William Reisacher    5     (come) up with the toothpaste idea while brushing his teeth in front of a mirror several years ago. “I saw all the foam (泡沫) in my mouth going into all the areas I wanted it to go,” he says. Delivering the allergen in the form     6     a toothpaste used daily would get the treatment to the right cells and keep it there, he thought.

A trial launched by Intrommune Therapeutics, which is developing the toothpaste, will test     7     well 32 adults tolerate growing numbers of allergens.

Allergist Sakina Bajowala supports the concept. But she worries about     8     (safe). She says that     9     (healthy) toothpastes could give allergens access to the blood stream,     10     (increase) the risk of allergic reactions.