1 . Experts are warning about the risks of extremely picky(挑剔的)eating after a teenager living on a diet of chips and crisps developed lasting sight loss. Eye doctors in Bristol cared for the 17-year-old after his sight had gone to the point of blindness. Tests showed he had serious vitamin deficiency(缺乏). Dr. Denize Atan, who treated him at the hospital, said, “His diet was basically a portion of chips from the local fish and chip shop every day. He also used to snack on crisps and sometimes white bread and ham, and not really any fruit and vegetables.”

The teenager saw his doctor at the age of 14 because he had been feeling tired and unwell. At that time he suffered from vitamin B12 deficiency, but he did not stick with the treatment or improve his poor diet. Three years later, he was taken to the Bristol Eye Hospital because of progressive sight loss.

He was not overweight or underweight, but he had lost minerals from his bones, which was really quite shocking for a boy of his age. In terms of his sight loss, he met the standards of being blind. “He had blind spots right in the middle of his sight,” said Dr Denize Atan, “That means he can’t drive and would find it really arduous to read, watch TV or recognize faces.”

Dr Denize Atan said that parents should learn about the harm that can be caused by picky eating, and turn to experts for help. For those who are concerned , she advised, “It’s best not to be anxious about picky eating , and instead calmly introduce one or two new foods with every meal.” She said multivitamin tablets can supplement(补充) a diet, but cannot take the place of eating healthily. “It’s much better to take in vitamins through a varied and balanced diet,” she said, adding that too many certain vitamins , including vitamin A, can be harmful ,“so you don’t want to overdo it.”

1. What does Dr Denize Atan imply in paragraph 1?

A．The diet of the boy is not balanced.

B．Fruit and vegetables are rich in vitamins.

C．Picky eating is common among teenagers.

D．The cause of the boy’s disease is unknown.

2. Why did the boy go to see his doctor at the age of 14?

A．To improve his poor diet.

B．To get some help to lose weight.

C．To be treated for his discomfort.

D．To slow down his progressive sight loss.

3. What does the underlined word “arduous” in paragraph 3 probably mean?

A．Important.

B．Easy.

C．Necessary.

D．Difficult.

4. What does the last paragraph mainly talk about?

A．Reasons why the boy is seriously ill.

B．Suggestions for the boy’s family to care for him.

C．Advice for parents worried about picky eating.

D．Ways of taking in enough vitamins and minerals.

2 . You might have heard about how honey bees are doing poorly these days. It’s different, though, from the situation many of the world’s vulnerable (脆弱的) animals find themselves in. We want them to live their lives and grow stronger, but are we willing to change our lifestyles to make it happen? The decrease in honey bees is a bit different, because if honey bees can’t live well, neither can people and, eventually people won’t eat as a result.

As happened in 2017, U.S. beekeepers lost 40 percent of their bees because of a disease. It’s really about the earnings of beekeepers and the reduced amount of bees. But it doesn’t stop there. Honey bees go around doing pollination (授粉). And do you know what need to be pollinated? That’s our crops. The United States Department of Agriculture (USDA) estimates bees pollinate about $15 billion worth of apples and peaches each year in the United States alone.

So, we 21st-century humans not only take notice, but also start trying to fix the problem. It’s infeasible that we give every bee the treatment. We can’t imagine how huge the task is and how hard we carry on it! The most promising immediate solution seems to prevent the disease. That’s where the bee vaccine (疫苗) comes.

Scientists have long thought immunizing (使免疫) bees will be unworkable, but a 2015 study discovered that bees transfer immunity to their babies through protein. Vaccinating a bee won’t help that bee, but if you vaccinate the queen of bees, she can pass her immunity on to her later generations through her eggs.

The new vaccine will treat for American foulbrood (AFB), a serious disease that quickly destroys bees. It’s in the testing phases and most likely headed for bee boxes near you. And don’t worry, it doesn’t require a tiny doctor’s chair and needle to deliver the vaccine—the queen bee can drink the medicine in a little sugar water and pass it along to her later generations.

1. What does exactly the author intend to tell us through the 2017 beekeepers’ incident?

A．The beekeepers lead a terrible life.

B．The number of bees continues to decrease.

C．The decline of bees affects the production of grain.

D．The pollination work of bees is huge and complicated.

2. What does the underlined word “infeasible” in Paragraph 3 mean?

A．Practical

B．Impossible

C．harmful

D．Convenient

3. What does Paragraph 4 suggest?

A．The bee vaccine is hard to develop.

B．Bees will learn skills from the queen.

C．Bees can transfer immunity to each other.

D．The bee vaccine can take effect in the long run.

4. What can be inferred about the vaccine from the last paragraph?

A．It’s applied to all sick bees.

B．It will be delivered to bees by skilled doctors.

C．It works by allowing the queen of bees to take it.

D．It has been put into use and makes many bees survive.