Ben is sitting _____________ (在……中) a group of children, telling them a story.
Soap is _____________ (广泛) used in our lives around the world.
This is Helen’s _____________ (第九) year in China.
It may be difficult to maintain (维持) healthy eating habits while leading a busy life, but it is not impossible. The five simple tips below will help you have a healthy eating plan to fit into your busy schedule.
1.
Just grab (抓) a sheet of paper and outline the meals you will have Monday – Sunday. This makes food shopping and preparation so much easier. Placing Post-it notes on your refrigerator where you will see the plan every day works just as well.
2.
You can cook one main ingredient recipe on Monday, and then use that same recipe for different meals throughout the week. Chicken, for example, can be eaten for dinner one night. What’s left over can be diced and used to make an easy Chicken Salad Sandwich for lunch the next day.
3.
If you think your freezer is just for storing half eaten cartons (盒) of ice cream, you should think again. You can prepare a bunch of one-dish meals like casseroles, chilies, and stews, and then freeze them. When you’re ready to eat, just pop your meal into the oven or place it on the stove (火炉) and you have a hot, fresh, home-cooked meal in no time.
4.
Healthy breakfast shakes and smoothies will leave you feeling energized and full for a few good hours. There are so many delicious ways to mix up your shakes and smoothies that you’ll never get bored.
5.
If you eat lunch at your work place, pack your meal for the next day. You can also pack your own healthy snacks, such as nuts, dried fruits, etc., and take it with you in an insulated bag (保温袋).
根据短文内容，从下列选项中选出能填入文中空白处的最佳选项，选项中有一项为多余选项。
A.Keep calm and freeze on.
B.Watch how other people solve troubles.
C.Pack your lunch the night before.
D.Plan your meals out.
E.Shake it up in the mornings.
F.Cook once; eat it twice (or three times!)
Antarctica (南极洲) is the coldest, driest and windiest place on our planet. What would it be like to live and work there? On Oct. 15th, 2019, 50 Chinese scientists set sail from Shenzhen, heading for Antarctica. This was our country's 36th Antarctic expedition. The ship, Xuelong 2, is the first icebreaker made in China. Xuelong 2 is one of the world's best research icebreakers.
It can sail to any place around the world in one trip without refueling (加燃料). It can work in temperatures as low as -30%℃. It is the first in the world to use two-way ice-breaking technology, which means that it can break the ice while moving forward or backward.
Because of Antarctica's special environment, scientists from around the world have been there to do studies for many years. The study of Antarctica's geology (地质) is also important. Rock in Antarctica can tell scientists what the weather was like a long time ago. And they can help scientists understand how the earth has changed over time. There are also many wild animals, such as penguins and seals. Scientists can learn how animals live in cold places by studying them.
As we all know, life in Antarctica is not easy－it's cold and sometimes dangerous. But scientists say it's still quite fun. For example, some scientists study how penguins walk, what they eat and why they move from one place to another. They are excited to see the cute animals playing around. They hope their studies can help protect them.
Xuelong 2 finished its tasks and returned to Shanghai on April 22, 2020.
1.How many Chinese scientists headed for Antarctica on Oct 15th, 2019?
A.Fifteen. B.Nineteen. C.Fifty. D.Two hundred.
2.Xuelong 2 is ________.
A.the first icebreaker made in the world B.the first in the world to use two-way ice-breaking technology
C.one of the best research icebreakers in China D.the second icebreaker made in China
3.According to Paragraph 3, scientists study________ in Antarctica.
A.how the weather has changed B.the geology and wild animals
C.the original plants D.how the rock disappeared
4.Which of the following best describes scientists’ life in Antarctica?
A.Not easy but still quite fun. B.Dangerous and boring.
C.Hard and dangerous. D.Safe but quite tiring.
5.When did Xuelong 2 return to Shanghai from Antarctica?
A.In mid-March 2020. B.In late March 2020.
C.In mid-April 2020. D.In late April 2020.
When we were little kids, we knew about traffic lights. The color red means stop, the color green means go and the color yellow means slow down or show some caution (小心). But why are these colors used for traffic lights? Why couldn't they be colors like blue, brown or orange? Here is the history of the colors for traffic lights.
Well, it's important to know that before there were traffic lights for cars, there were traffic signals (信号) for trains. At first, railway companies used red to mean stop, white to mean go and green to mean caution. But train drivers had a few problems with the color white meaning go. They could easily mistake stars at night for the signal to go. So railway companies moved to the color green to mean go, and the color yellow to mean caution.
The color red has a lot to do with danger. Red is the color with the longest wavelength (波长), so it can be seen from a greater distance than other colors. The color yellow is used to mean caution because it has a little shorter wavelength than red, but not as short as green.
Believe it or not, yellow was once used to mean stop. Back in the 1900s, some stop signs were yellow because they were easier to see in poorly-lit areas. But people once again used red to mean stop after more highly reflective (反光) materials were developed. Since yellow can be seen well at all times of the day, school zones and school buses continue to be painted yellow.
Traffic lights really came a long way.
From: https: //www.rd.com
1.The earliest traffic signals were for trains.
2.The color blue was once in early traffic signals.
3.The color green can be seen from a greater distance than other colors.
4.Back in the 1900s, yellow was used to mean stop.
5.School buses are painted yellow because this color can be seen at all times of the day.
