1 . A diet high in protein is often promoted as part of a healthy lifestyle, and many diets encourage consumers to reduce fats in favor of protein to lose weight and gain lean muscle.
For the study in Nature Metabolism, Bettina Mittendorfer and colleagues found that while increasing the proportion of protein in daily calorie intake is beneficial, consuming protein too much not only doesn’t add to the development of lean muscle but can cause unintended negative health effects.
“Consumers are being led to believe that they can never get too much protein in their diet,” says Mittendorfer. “However, our research shows that specific amino acids (氨基酸), which are the building blocks of protein, can trigger heart disease through a signaling mechanism at the cellular level in the blood.”
An amino acid found in animal-protein foods, such as beef, eggs, and milk, was found to be responsible for signaling activity in cells that typically clear away rubbish in blood vessels. As consumption of dietary protein increases, so does the consumption of leucine (亮氨酸), the specific amino acid responsible for triggering this cellular activity in the blood.
When functioning normally, these cells work to keep blood vessels free from plaque (血小板) buildup. When their production becomes overactive, the resulting accumulation of spent cells in the vascular system can cause the plaque buildup and blockages they are supposed to prevent. The resulting hardening of the arteries (动脉) is a leading risk factor for heart attack and stroke.
“Our hope is to eventually find the Goldilocks approach for maximizing the health benefits of dietary protein, such as building lean muscle, while avoiding the health drawbacks from overconsumption.” says Mittendorfer.
The researchers found that consuming more than 22% of daily calories from protein carries more downside risk than dietary benefit. For a normal adult, 20 to 30 grams of protein per meal, or 60 to 90 grams of protein per day is adequate to support health.
The study combined human trials with experiments in mice and cells.
1. Which of the following is the finding of the research?| A．It is beneficial to take in protein in daily diets. |
| B．A diet high in protein is always considered as a healthy lifestyle. |
| C．Many consumers are in favor of protein to lose weight and gain muscle. |
| D．Consuming protein too much doesn’t do good to the lean muscle development. |
| A．The plaque buildup. | B．Animal-protein foods. |
| C．The hardening of the arteries. | D．Overactive cellular activity in the blood. |
| A．To take in proper amount of protein per meal. |
| B．To exercise everyday in order to build lean muscle. |
| C．To consume more than 22% of daily calories from protein. |
| D．To do more experiments in mice and cells to provide evidence. |
| A．It is conducted in a relatively scientific way. |
| B．It finally finds a proper approach to keep fit. |
| C．It is totally against what people have believed. |
| D．It offers a diet standard for people of all ages all over the world. |
Maisie and her car
Maisie usually goes swimming every morning before she goes to work. She leaves home at 5:30 am and drives to the swimming pool. She swims for an hour, and then hurries home for a shower and breakfast before she leaves for work at 8 am.
One Thursday morning, Maisie drove to the swimming pool as usual. She did not feel happy because she had a quarrel (争吵) on the phone with a co-worker the night before. She was still thinking about it and feeling so depressed that she did not want to go to work.
“Swimming may make me feel better. Come on,” Maisie said to herself. She parked the car opposite the sports center, took her sports bag from the back seat and walked to the building, forgetting to put on the handbrake (手刹).
While Maisie was swimming, a strong wind came and the car started to move. Very, very slowly the car moved out of the car park and across the road. It was early morning so the road was empty. There were no people walking around and no other cars on the road.
A few moments later, there was a sudden announcement on the loud speaker system. “Is the owner of a white Honda, number plate XJY436, in the pool?”
“XJY436! That’s my car,” thought Maisie. She swam to the side of the pool and climbed out. A lifeguard was standing next to the pool. Maisie ran up to him. ”That’s my car, “she said.” Did I leave the lights On? “No,” said the lifeguard, laughing. “Come and see.” Maisie followed the lifeguard out to the entrance of the sports center. “Look!” said the lifeguard when he pointed to the big entrance door. “Oh, no!” shouted Maisie. Her car was in the doorway. It was half inside the building and half outside. No one could go in or out of the sports center.
注意：1续写词数应为 150左右；2.请按如下格式在相应位置作答。
“Do you have your car key?” asked the lifeguard.
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Maisie’s entire face instantly turned red.
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________5 . Explorers Camp
•Full day camp for kids aged 5-13.
•Monday-Friday, July 8-26, 9am-4pm.
Week 1 | July 8-12
Week 2 | July 15-19
Week 3 | July 22-26
•Register for a single week or multiple weeks.
•Fees: $365 per week.
•The last day to cancel registration and receive a full refund (退款) is June 15.
Camp Structure
The day is divided into two thematic sessions per age group. Campers have a three-hour morning class engaging with a morning theme (9am to 12 noon) and a one-hour lunch break, followed by another three-hour class engaging with an afternoon theme (1pm to 4pm). Snack periods are held throughout the day. All campers should bring their own bagged lunch and snacks.
Camp Content
Explorers Camp organizes engaging arts, history and science-related activities in every class, and focuses on a range of topics that emphasize active learning, exploration and, most of all, fun! All camp sessions are created with age-appropriate activities that are tailored to the multiple ways that kids learn.
Camp Staff
Campers enjoy a staff-to-child ratio ranging from 1:4 to 1:7 depending on the age group. Instructors are passionate educators who are experts in their fields and have undergone training and a background check.
How are campers divided into different groups?
| A．By gender. |
| B．By nationality. |
| C．By interest. |
| D．By age. |
6 . Live with roommates? Have friends and family around you? Chances are that if you’re looking to live a more sustainable lifestyle, not everyone around you will be ready to jump on that bandwagon.
I experienced this when I started switching to a zero waste lifestyle five years ago, as I was living with my parents, and I continue to experience this with my husband, as he is not completely zero waste like me. I’ve learned a few things along the way though, which I hope you’ll find encouraging if you’re doing your best to figure out how you can make the change in a not-always-supportive household.
Zero waste was a radical lifestyle movement a few years back. I remember showing my parents a video of Bea Johnson, sharing how cool I thought it would be to buy groceries with jars, and have so little trash! A few days later, I came back with my first jars of zero waste groceries, and my dad commented on how silly it was for me to carry jars everywhere. It came off as a bit discouraging.
Yet as the months of reducing waste continued, I did what I could that was within my own reach. I had my own bedroom, so I worked on removing things I didn’t need. Since I had my own toiletries (洗漱用品), I was able to start personalising my routine to be more sustainable. I also offered to cook every so often, so I portioned out a bit of the cupboard for my own zero waste groceries. Perhaps your household won’t entirely make the switch, but you may have some control over your own personal spaces to make the changes you desire.
As you make your lifestyle changes, you may find yourself wanting to speak up for yourself if others comment on what you’re doing, which can turn itself into a whole household debate. If you have individuals who are not on board, your words probably won’t do much and can often leave you feeling more discouraged.
So here is my advice: Lead by action.
What do the underlined words “jump on that bandwagon” mean in the first paragraph?
| A．Share an apartment with you. |
| B．Join you in what you’re doing. |
| C．Transform your way of living. |
| D．Help you to make the decision. |
7 . According to the Solar Energy Industry Association, the number of solar panels installed(安装)has grown rapidly in the past decade, and it has to grow even faster to meet climate goals. But all of that growth will take up a lot of space, and though more and more people accept the concept of solar energy, few like large solar panels to be installed near them.
Solar developers want to put up panels as quickly and cheaply as possible, so they haven’t given much thought to what they put under them. Often, they’ll end up filling the area with small stones and using chemicals to control weeds. The result is that many communities, especially in farming regions, see solar farms as destroyers of the soil.
“Solar projects need to be good neighbors,” says Jordan Macknick, the head of the Innovative Site Preparation and Impact Reductions on the Environment (InSPIRE)project. “They need to be protectors of the land and contribute to the agricultural economy.” InSPIRE is investigating practical approaches to “low-impact” solar development, which focuses on establishing and operating solar farms in a way that is kinder to the land. One of the easiest low-impact solar strategies is providing habitat for pollinators(传粉昆虫).
Habitat loss, pesticide use, and climate change have caused dramatic declines in pollinator populations over the past couple of decades, which has damaged the U.S. agricultural economy. Over 28 states have passed laws related to pollinator habitat protection and pesticide use. Conservation organizations put out pollinator-friendliness guidelines for home gardens, businesses, schools, cities—and now there are guidelines for solar farms.
Over the past few years, many solar farm developers have transformed the space under their solar panels into a shelter for various kinds of pollinators, resulting in soil improvement and carbon reduction. “These pollinator-friendly solar farms can have a valuable impact on everything that’s going on in the landscape,” says Macknick.
Which of the following is the best title for the text?
| A．Pollinators: To Leave or to Stay |
| B．Solar Energy: Hope for the Future |
| C．InSPIRE: A Leader in Agriculture |
| D．Solar Farms: A New Development |
8 . Live with roommates? Have friends and family around you? Chances are that if you’re looking to live a more sustainable lifestyle, not everyone around you will be ready to jump on that bandwagon.
I experienced this when I started switching to a zero waste lifestyle five years ago, as I was living with my parents, and I continue to experience this with my husband, as he is not completely zero waste like me. I’ve learned a few things along the way though, which I hope you’ll find encouraging if you’re doing your best to figure out how you can make the change in a not-always-supportive household.
Zero waste was a radical lifestyle movement a few years back. I remember showing my parents a video of Bea Johnson, sharing how cool I thought it would be to buy groceries with jars, and have so little trash! A few days later, I came back with my first jars of zero waste groceries, and my dad commented on how silly it was for me to carry jars everywhere. It came off as a bit discouraging.
Yet as the months of reducing waste continued, I did what I could that was within my own reach. I had my own bedroom, so I worked on removing things I didn’t need. Since I had my own toiletries (洗漱用品), I was able to start personalising my routine to be more sustainable. I also offered to cook every so often, so I portioned out a bit of the cupboard for my own zero waste groceries. Perhaps your household won’t entirely make the switch, but you may have some control over your own personal spaces to make the changes you desire.
As you make your lifestyle changes, you may find yourself wanting to speak up for yourself if others comment on what you’re doing, which can turn itself into a whole household debate. If you have individuals who are not on board, your words probably won’t do much and can often leave you feeling more discouraged.
So here is my advice: Lead by action.
What was the attitude of the author’s father toward buying groceries with jars?
| A．He disapproved of it. |
| B．He was favorable to it. |
| C．He was tolerant of it. |
| D．He didn’t care about it. |
9 . Live with roommates? Have friends and family around you? Chances are that if you’re looking to live a more sustainable lifestyle, not everyone around you will be ready to jump on that bandwagon.
I experienced this when I started switching to a zero waste lifestyle five years ago, as I was living with my parents, and I continue to experience this with my husband, as he is not completely zero waste like me. I’ve learned a few things along the way though, which I hope you’ll find encouraging if you’re doing your best to figure out how you can make the change in a not-always-supportive household.
Zero waste was a radical lifestyle movement a few years back. I remember showing my parents a video of Bea Johnson, sharing how cool I thought it would be to buy groceries with jars, and have so little trash! A few days later, I came back with my first jars of zero waste groceries, and my dad commented on how silly it was for me to carry jars everywhere. It came off as a bit discouraging.
Yet as the months of reducing waste continued, I did what I could that was within my own reach. I had my own bedroom, so I worked on removing things I didn’t need. Since I had my own toiletries (洗漱用品), I was able to start personalising my routine to be more sustainable. I also offered to cook every so often, so I portioned out a bit of the cupboard for my own zero waste groceries. Perhaps your household won’t entirely make the switch, but you may have some control over your own personal spaces to make the changes you desire.
As you make your lifestyle changes, you may find yourself wanting to speak up for yourself if others comment on what you’re doing, which can turn itself into a whole household debate. If you have individuals who are not on board, your words probably won’t do much and can often leave you feeling more discouraged.
So here is my advice: Lead by action.
What can we infer about the author?
| A．She is quite good at cooking. |
| B．She respects others’ privacy. |
| C．She enjoys being a housewife. |
| D．She is a determined person. |
10 . Explorers Camp
•Full day camp for kids aged 5-13.
•Monday-Friday, July 8-26, 9am-4pm.
Week 1 | July 8-12
Week 2 | July 15-19
Week 3 | July 22-26
•Register for a single week or multiple weeks.
•Fees: $365 per week.
•The last day to cancel registration and receive a full refund (退款) is June 15.
Camp Structure
The day is divided into two thematic sessions per age group. Campers have a three-hour morning class engaging with a morning theme (9am to 12 noon) and a one-hour lunch break, followed by another three-hour class engaging with an afternoon theme (1pm to 4pm). Snack periods are held throughout the day. All campers should bring their own bagged lunch and snacks.
Camp Content
Explorers Camp organizes engaging arts, history and science-related activities in every class, and focuses on a range of topics that emphasize active learning, exploration and, most of all, fun! All camp sessions are created with age-appropriate activities that are tailored to the multiple ways that kids learn.
Camp Staff
Campers enjoy a staff-to-child ratio ranging from 1:4 to 1:7 depending on the age group. Instructors are passionate educators who are experts in their fields and have undergone training and a background check.
How many hours of class will you have altogether if you register for a single week?
| A．15. |
| B．21. |
| C．30. |
| D．42. |
