1 . In a bustling city in Arizona stood a high school where most of the students live in poverty. Among them were four sons of Mexican immigrants, Juan, Oscar, Luis, and Alfredo. These boys, coming from
With enthusiasm and energy, they started calling mechanical engineers for design help. They were
As they worked on their robot, the boys also faced personal challenges. Juan struggled with the weight of family responsibilities; Oscar
After a few test runs of their robot, they piled into a second-hand van to head to the competition. Upon entering the main pool area, they noticed the college teams wearing matching outfits, with robots sponsored by big companies. Feeling a bit nervous, the boys put the robot in the water for a test run.
However, instead of letting this
A.academic | B.relevant | C.humble | D.professional |
A.space | B.mechanics | C.research | D.ocean |
A.giant | B.industrial | C.underwater | D.local |
A.advised | B.forced | C.challenged | D.consulted |
A.Reliant on | B.Available to | C.Short of | D.Desperate for |
A.Therefore | B.Otherwise | C.Moreover | D.However |
A.tied | B.pieced | C.added | D.wrapped |
A.conquered | B.created | C.expressed | D.battled |
A.perfect | B.strange | C.slight | D.elegant |
A.With | B.Given | C.Despite | D.Besides |
A.Unfortunately | B.Basically | C.Actually | D.Consequently |
A.disagreement | B.failure | C.conflict | D.progress |
A.scaled | B.lowered | C.inserted | D.fed |
A.boring | B.confusing | C.wowing | D.motivating |
A.bravery | B.generosity | C.confidence | D.perseverance |
The History of Snacks
Hamburgers, sandwiches and pizza are some of the worlds’ favourite snacks, but have you ever wondered
The hamburger started life as small pieces of raw beef
People say that it was John Montague, the Fourth Earl of Sandwich,
In 1889, Queen Margherita of Italy invited chef Rafaelle Esposito from his pizzaria to visit the royal palace and
Complaining: The Happiness Killer
In 15th-century Germany, there was an expression: Greiner, Zanner, which can be translated as “a chronic (长期的) complainer.” Are you a bit of a Greiner, Zanner? If so, you’re not alone. Survey data show that customers today are more than twice as likely to complain about a product or service as they were in 1976. A U. K.-based survey also observed a rise in job dissatisfaction over a two-year period before autumn 2022.
Complaints can be grouped into different categories. As is reported, 45 percent of complaints concern the behavior of others. For instance, parents repeatedly criticize their children for small issues like messy bedrooms or dirty clothes. Another 29 percent focus on personal discomfort. A common complaint in this category might be about feeling too hot in a room without air conditioner. The remaining 26 percent involve unpleasant obligations like unnecessary work meetings people are forced to attend.
The problem with all of these complaints is that it can feel helpful — but it typically isn’t . Although complaining might offer temporary relief, it’s bad for your happiness in the long run. Researchers who measured people’s mood before and after they complained found that those complainers’ mood was significantly worsening. Besides, complaining can also lower the happiness of the people around you. In some relationships, the negative effect can pass like a virus to those exposed. In other words, when people see others’ complaints expressing anger, disgust and sadness, they can, in turn, feel similar emotions.
As the 20th-century Bulgarian philosopher Archimandrite Seraphim Aleksiev observed, “Complaining is like the winter frost which, when it falls, destroys all the labors of the gardeners.”
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________9 . Rain Collection
What do you like to do on a rainy day —sit inside and listen to the pitter-patter on the roof or splash outside and feel the cold drops on your face? Whatever you choose, rain is vitally essential in the nature.
As climate change heats up the planet and causes extreme weather, more places face water shortages.
Humans have collected rain since ancient times.
Even in dry climates, there is a lot of potential rainwater that can be effectively harvested and utilized. This rich yet often overlooked resource has the potential to significantly contribute to water conservation efforts, especially in regions facing water shortages. Just one inch of rain falling on a medium-sized house produces over 600 gallons of water.
Nowadays, rainwater is still used as a primary supply in many places in the world, like Vietnam and Hawaii. In places with piped-in water, rainwater is not commonly used, but this is changing. Rainwater harvesting is getting more popular since it’s easy to do and helps create water security.
A.Large roofs can, hence, collect greater amount of water. |
B.Rainwater can also be used for fountains and ponds. |
C.We all deeply depend on the nourishment of rain. |
D.To secure future water supply, we need new sources. |
E.Now, many people are returning to this practice. |
F.Rainwater is clean but it gets dirty from the roof. |
10 .
With its bright colors, easy-to-learn rules and familiar music, the video game Tetris has endured as a pop culture symbol over the past 40 years. Many people, like me, have been playing the game for decades, and it has been updated to adapt to new technologies like game systems, phones and tablets.
However, Tetris is much more than winning. The game, in which players must control blocks of different shapes as they slide down a screen, is based on a fundamental element of geometry, called dynamic spatial reasoning (动态空间推理). It is taught by mathematics educators and used by architects, engineers, animators, and many others. Players employ these geometric skills to progress in Tetris, so playing it both tests and improves a player’s dynamic spatial reasoning.
Spatial reasoning is the ability to visualize geometric figures and how they will move in space. So, dynamic spatial reasoning is the ability to visualize actively moving figures. The Tetris player must quickly decide where the falling game piece will best fit and then move it there. This movement involves both translation — moving a shape right and left, and rotation — turning its shape by 90 degrees at a time.
Spatial visualization is a key element of a mathematics discipline called transformation al geometry, which is usually first taught in middle school. In a typical transformational geometry exercise, students might be asked to represent a figure by its x and y coordinates (坐标) on a coordinate graph and then identify the transformations, such as translation and rotations, necessary to move it from one position to another while keeping the piece the same shape and size.
While it may seem simple, transformation al geometry is the foundation for several advanced topics in mathematics. Architects and engineers both use transformations to draw up blueprints, which represent the real world in scale drawings. Animators use concepts of transformations as well. While animators today use computer programs that automatically move figures around, they are all based on this kind of transformation.
1. Which is NOT a key reason for Tetris’s lasting popularity?A.Its pleasure of winning the game. | B.Its bright colors and catchy music. |
C.Its link to complex math and geometry. | D.Its simple rules and tech adaptability. |
A.Logical reasoning. | B.Mathematical calculation. |
C.Memory maintaining. | D.Spatial visualization. |
A.(a) | B.(b) | C.(c) | D.(d) |
A.Tetris is a particularly useful tool for animation and architecture designs. |
B.Spatial visualization is based on the constant change of a figure’s position. |
C.Transformation algeometry behind Tetris can be applied to various fields. |
D.Spatial reasoning is too difficult for middle school students to master. |