1 . Blowing Up Balloons with CO₂
Chemical reactions (化学反应) make for some great experiments. You can make use of the CO₂(carbon dioxide) given off by a baking soda (小苏打) and lemon juice reaction to blow up your balloon!
What you’ll need:
●Balloon ●About 40ml of water ●Soft drink bottle
●Juice from a lemon ●I teaspoon of baking soda
Instructions:
●Before you begin, make sure that you pull the balloon long to make it as easy as possible to blow up.
●Put the 40ml of water into the soft drink bottle.
●Add the baking soda and mix it with water.
●Put the lemon juice in and quickly put the balloon over the mouth of the bottle.
What’s happening?
If all goes well, then your balloon should inflate! Adding the lemon juice to the baking soda creates a chemical reaction and produces CO₂. The gas rises up and escapes (逸出) through the soft drink bottle. It doesn’t, however, escape the balloon, pushing it outwards and blowing it up.
1. Which of the following do you need for the experiment?| A．Two cups. | B．Apple juice. |
| C．250 ml water. | D．A teaspoon of baking soda. |
| A．Heat the water. | B．Drink some juice. |
| C．Blow up the balloon. | D．Pull the balloon long. |
| A．To describe an experiment. | B．To introduce a game. |
| C．To produce soft drinks. | D．To save some chemicals. |
1. What is the speaker doing?
| A．Hosting a radio program. | B．Chairing a meeting. | C．Conducting an interview. |
| A．China. | B．Japan. | C．Thailand. |
| A．1.14 billion yuan. | B．7.4 billion yuan. | C．30 billion yuan. |
| A．To get a surprise. | B．To gain comfort. | C．To reduce stress. |
3 . What does Beijing’s Palace Museum look like at night? Many people don’t know the answer to this question, as it closes at around 4:30p.m in winter and 5:00p.m in summer. However, to celebrate the Lantern Festival, Beijing’s Palace Museum opened its door to the public after dark——for two nights only. That’s a first in 94 years!
Although people could get free tickets on the museum’s website, it was difficult to get a ticket. The website even stopped working for a while because too many people visited it at the same time. Zhang Zhifu, a 77-year-old woman, received a ticket from the museum as a gift. “I grew up in Beijing and I visited the Palace Museum every year, but I never got to see it at night, It is truly an honor.” She said.
In the past celebrating the Lantern Festival was a tradition for the imperial(皇帝的)family.“We want to pass the tradition on and give people more festival experience.”Said Shan Jixiong, the head of the Palace Museum. On the night of February19th,2019, about 3,000 visitors spent the Lantern Festival in the Palace Museum.
1. Beijing’s Palace Museum closes at around 4:30 p.m in________.| A．spring | B．summer | C．autumn | D．winter |
| A．one night | B．two nights | C．three nights | D．four nights |
| A．too many people visited it at the same time. |
| B．there weren’t enough tickets |
| C．the Palace Museum was too crowded |
| D．no body wanted to see the Palace Museum at night |
| A．National Day | B．the Lantern Festival | C．the Dragon Boat Festival | D．Mid-Autumn Festival |
4 . Maggie Doyne was 18 when she took a gap year(休学)between high school and college. She packed up a few of her belongings(所有物) and
That’s when Doyne decided to take Hema
The Kopila Valley Children’s Home
Maggie Doyne’s story is a great
| A．set about | B．sold out | C．set out | D．put out |
| A．strong-willed | B．narrow-minded | C．light-hearted | D．poverty-stricken |
| A．focus | B．support | C．contribute | D．concern |
| A．Shocked | B．Terrified | C．Amused | D．Embarrassed |
| A．off | B．with | C．beyond | D．like |
| A．Forget | B．Recommend | C．Mention | D．Downsize |
| A．on her feet | B．under her wing | C．with her hand | D．in her arms |
| A．still | B．merely | C．yet | D．barely |
| A．receipts | B．pensions | C．budgets | D．savings |
| A．home | B．village | C．school | D．park |
| A．voluntary | B．efficient | C．attractive | D．demanding |
| A．cured | B．welcomed | C．tracked | D．promoted |
| A．survive | B．develop | C．withdraw | D．weaken |
| A．creation | B．informer | C．prediction | D．reminder |
| A．step | B．risk | C．place | D．idea |
5 . Colors can affect (影响) our feelings. Blue is a calm (冷静的) color. If you are feeling nervous (紧张), you can wear blue clothes or stay in a blue room. Blue is also the color of sadness. When someone says he’s feeling blue, he means he is sad.
White can also make you feel calm. So you can wear white too if you are nervous. And white often means a new beginning.
Green is the color of nature. It can give us more energy when we are feeling tired.
Some colors can make you feel warm. In cold areas, people usually use warm colors in their homes, like orange and yellow. Yellow is also the color of wisdom. Some people prefer this color when they study for exams. For example, they may use yellow school things.
Red is one of the strong colors. It often makes us feel active. But this color can also mean danger. So it is often used in stop signs (停车标志) and lights.
1. Which may be NOT good for you if you are nervous?| A．Wear white clothes. | B．Wear blue clothes. |
| C．Stay in a red room. | D．Stay in a blue room. |
| A．I like blue. | B．I’m feeling white. |
| C．I like white. | D．I’m feeling blue. |
| A．Yellow and blue. | B．Yellow and orange. |
| C．White and green. | D．Blue and white. |
| A．智慧 | B．消极 | C．愉快 | D．正义 |
| A．White can make us feel tired. | B．Red is often used in stop signs. |
| C．Orange can mean danger sometimes. | D．Green symbolizes a new beginning. |
| A．2. | B．3. | C．4. |
| A．Have a swim. | B．Camp in the mountains. | C．Go hiking. |
8 . What time of day can you think most quickly? Are you a morning person? Or does it take you a few hours to get your brain going? A lot of recent research suggests that we should pay attention to our body clock. It can tell us what time of day we can perform best at.
Many people work best later in the morning. This is because the body’s temperature takes time to rise through the day. Taking a warm shower when you wake up can help your body’s temperature rise quickly.
But everyone’s body clock is different and some are special. Morning people will get up early and work better early in the day. Evening people will work later but work better towards the end of the day.
Research shows that we’re better at some activities at certain times of the day. Physical performance is at its best between 3 pm and 6 pm, so it’s better to exercise later in the day. Between noon and 4 pm, people begin to pay less attention. This is because we think less quickly after a big meal. Research also shows we become sleepy around 2 pm. This is why people in Spain take a short sleep in early afternoon. Finally, it is best to eat when we’re active. This allows our body to burn calories better and stops our blood sugar levels(血糖)from getting too high.
1. ________ can tell us what time of day we can perform best at.| A．Morning people | B．A warm shower |
| C．Our body clock | D．Our body temperature |
| A．Between 3 pm and 6 pm. | B．Between 7 pm and 10 pm. |
| C．Between noon and 4 pm. | D．Between 5 am and 8 am. |
| A．Because eating makes the brain unable to think quickly. |
| B．Because it makes our blood sugar levels higher. |
| C．Because our body needs a short sleep. |
| D．Because our body can burn more calories. |
9 . The Adler Planetarium Chicago is home to more than 35,000 square feet of exhibits. From huge models of the Solar System, to ancient astronomical (天文的) instruments, to interactive adventures, Adler's exhibit galleries provide a passageway for you to explore the universe. The Adler also offers mini science exploration activities that are quick l0-minute lessons. Visitors can learn some interesting astronomical facts at this small activity carts.
The Adler Planetarium Chicago is the only museum in the world with two full-size planetarium (天文馆) theaters. Since 1930, the wonder of the stars has been visible in the historic Sky Theater. Powered by brand new Digistar 3TM technology, the StarRider Theater is a completely digital, virtual (虚拟的) outer space environment. The famous Zeiss Planetarium projector is able to accurately reproduce the movement of every aspect of the night sky.
Do's and Don'ts:
Do Take the Bus/Train: Leave the car at home for this museum trip. The Adler is located within close proximity to public transit.
Don't Miss the Doane Observatory: When weather permits, the Doane is open at the Adler for observing with its 20-inch diameter telescope:
Don't Miss Museum Special Events: The Adler offers a summer camp for kids from mid. June to August.
Ticket Price:
Adult: $ 28; child: $ 22. Book online now to Save 37%.
Regular Schedule:
Mon.-Fri. 10 a.m.-4 p.m.; Sat.-Sun. 10 a.m.-4:30 p.m.
Summer Hours: 9:30 a.m.-6 p.m. daily.
Nearest Transit: Roosevelt Metro Station
Address: 1300 S Lake Shore Dr, Chicago, IL 60605
1. What's the main function of the Adler Planetarium Chicago?| A．Displaying the models of the Solar System. |
| B．Selling ancient astronomical instruments. . |
| C．Offering a passageway to explore the universe. |
| D．Giving l0-minute lessons to visitors. |
| A．drive your private car | B．consider weather conditions |
| C．buy a telescope in advance | D．join the Adler's summer camp |
| A．$ 37. | B．$ 63. |
| C．$ 72. | D．$ 100. |
10 . Ways to Improve Your Health
Sometimes it may seem difficult to improve our health. If so, the following health habits may help you.
●
Research shows that eating a meal in the morning results in less body fat and less chance of overeating. Eating breakfast can help people feel better physically and mentally through the day.
●Get enough sleep.
Poor sleep can influence our memory and learning.
●Take a walk every day.
●Make social connections.
Social groups can provide support. They might include sport teams, art or music groups. The people in the group can offer advice and can help each other in difficult times. Also, being in a group keeps your mind busy.
●Have a hobby.
A hobby could be running, reading or making something with your hands. Hobbies help people to relax and rest. Hobbies bring us joy.
| A．Get much exercise. |
| B．Eat breakfast every morning. |
| C．It can also cause traffic accidents! |
| D．An active mind is a healthy mind! |
| E．Spending time with others is very helpful. |
| F．Everyone could get a little more joy in their lives! |
| G．Walking is an easy way to add exercise to our lives. |
