1 . Being stuck at home doesn’t mean that learning stops. In fact, it's just the opposite. Here are some activities and resources to foster (促进) kids' imagination and build their curiosity at home.

Let's Get down to Science

The science lab at school may be closed, but kids can still put on goggles and a white lab coat and learn at home. This Test Tube Experiment Kit will make them feel like a genius in no time. Kids will get the chance to learn about basic chemistry, physics, and more by creating pop-resistant bubbles, bouncy balls, and other objects.

To Infinity (无穷) and Beyond

Earth is a part of the Milky Way, but do kids know how many galaxies there are in the universe? There are so many fun and fascinating things to learn about space that the possibilities truly go to infinity and beyond. A great way to start your child's educational space adventure is with this Discovery Real Life Sticker and Activity Book: Space.

Take a Walk on the Wild Side

Biology class is in session! Here's kids' chance to get up close and personal with a great white shark without putting on a wetsuit. This 4D Great White Shark Anatomy Kit allows them to get an inside look at what makes these predators of the deep so powerful. And then take an even deeper dive into a shark's world with I'm a Shark.

Let your kid take advantage of this time at home and find new ways to keep exploring the world around him.

1. What is common among these activities above?

A．They are all performed outdoors.

B．They are all associated with physics.

C．They all recommend some resources for kids to study.

D．They are all carried out by the way of experimenting.

2. Which resource favors children interested in stars?

A．The Test Tube Experiment Kit.

B．Discovery Real Life Sticker and Activity Book: Space.

C．The 4D Great White Shark Anatomy Kit.

D．I'm a Shark.

3. What's the shared goal of the activities?

A．To gain financial benefits.	B．To save kids from boredom.
C．To explore new technologies.	D．To inspire kids to study at home.

2 . For those who can stomach it, working out before breakfast may be more beneficial for health than eating first, according to a study of meal timing and physical activity.

Athletes and scientists have long known that meal timing affects performance. However, far less has been known about how meal timing and exercise might affect general health.

To find out, British scientists conducted a study. They first found 10 overweight and inactive but otherwise healthy young men, whose lifestyles are, for better and worse, representative of those of most of us. They tested the men’s fitness and resting metabolic (新陈代谢的) rates and took samples (样品) of their blood and fat tissue.

Then, on two separate morning visits to the scientists’ lab, each man walked for an hour at an average speed that, in theory, should allow his body to rely mainly on fat for fuel. Before one of these workouts, the men skipped breakfast, meaning that they exercised on a completely empty stomach after a long overnight fast (禁食). On the other occasion, they ate a rich morning meal about two hours before they started walking.

Just before and an hour after each workout, the scientists took additional samples of the men’s blood and fat tissue.

Then they compared the samples. There were considerable differences. Most obviously, the men displayed lower blood sugar levels at the start of their workouts when they had skipped breakfast than when they had eaten. As a result, they burned more fat during walks on an empty stomach than when they had eaten first. On the other hand, they burned slightly more calories (卡路里), on average, during the workout after breakfast than after fasting.

But it was the effects deep within the fat cells that may have been the most significant, the researchers found. Multiple genes behaved differently, depending on whether someone had eaten or not before walking. Many of these genes produce proteins (蛋白质) that can improve blood sugar regulation and insulin (胰岛素) levels throughout the body and so are associated with improved metabolic health. These genes were much more active when the men had fasted before exercise than when they had breakfasted.

The implication of these results is that to gain the greatest health benefits from exercise, it may be wise to skip eating first.

1. The underlined expression “stomach it” in Paragraph 1 most probably means “______”.

A．digest the meal easily	B．manage without breakfast
C．decide wisely what to eat	D．eat whatever is offered

2. Why were the 10 people chosen for the experiment?

A．Their lifestyles were typical of ordinary people.

B．Their lack of exercise led to overweight.

C．They could walk at an average speed.

D．They had slow metabolic rates.

3. What happened to those who ate breakfast before exercise?

A．They successfully lost weight.	B．They consumed a bit more calories.
C．They burned more fat on average.	D．They displayed higher insulin levels.

4. What could be learned from the research?

A．A workout after breakfast improves gene performances.

B．Too much workout often slows metabolic rates.

C．Lifestyle is not as important as morning exercise.

D．Physical exercise before breakfast is better for health.