1 . Alexander Miles is an African-American inventor who is largely known for his contribution to the elevator industry. He was awarded a US patent in 1887 for his design for the elevator. The design allowed the doors of the elevator to open and close automatically when it stopped on a floor.     1    

Alexander Miles’ invention was an improvement on the previous models of the elevator, mainly due to safety concerns. Older models of the elevator would not close automatically before the elevator started to move.     2     There were accidents where people would fall out of the elevator and into the shaft (电梯通道).

    3     His device worked by attaching a flexible belt to the elevator cage. When the belt bumped against drums that were placed directly above and under the floors, it caused the elevator doors to open and close. The doors were further operated through a series of levers and pulleys (滑轮).

Sometimes, people might mistake Alexander Miles for inventing the elevator door system.     4     The first patent for elevator doors was given to John W. Meaker. Mr. Meaker was awarded the patent for the creation of the elevator door system in 1874, 13 years before Mr. Miles’ patent.

Despite the confusion, Alexander Miles made a huge contribution to the elevator.     5     His patent for automated opening and closing doors is still used by most elevators today.

A．Actually, it’s not the case.

B．They are located below and above the doors.

C．Before his design, the doors had to be opened by hand.

D．This could be dangerous if someone forgot to close the door.

E．Modern-day elevator doors are still designed based on his basic principles.

F．At this time, Miles was inspired to work on elevator door mechanisms.

G．Miles’ improvement to the elevator was basically a matter of structure.

2 . Chinese scientists have created the world's first light-based quantum(量子) computer, called Jiuzhang, opening a new era of quantum computation. It's a breakthrough in the field after Google completed its quantum computer last year.

Compared with today's best supercomputers, Jiuzhang can calculate 100,000 billion times faster. For example, it takes Jiuzhang 200 seconds to perform Gaussian boson sampling(高斯玻色取样问题), an extremely challenging calculation, while the fastest classical supercomputer, Fugaku, would need about 600 million years to complete the same task.

Quantum computers can take computational shortcuts (捷径) when simulating (模拟) extremely complex scenarios(场景), whereas conventional computers have to find a solution step by step, taking significantly more time in the process.

Quantum machines' amazing computing power arises from their basic building blocks, called quantum bits, or qubits, according to the University of Science and Technology of China. Usually, classical computers handle data in binary (二进制的) bits, presenting data as either 0s or ls. However, quantum computers process data using qubits, which can be identified as 0s, 1s or everything in between. As a result, as the number of qubits increases, the computing ability of quantum computers increases too.

With advantages over traditional computers, quantum computers have a wide range of applications. The calculations carried out by Jiuzhang can potentially be applied to machine learning, quantum chemistry and graph theory, according to Pan Jianwei, a key researcher behind Jiuzhang.

According to Pan, quantum computing has already become a fierce competition ground among the United States, Europe, and other developed regions. “The feat(壮举) cements(巩固) China's position in the first echelon( 梯队)of nations in quantum computing,” the university said in a news release.

Jiuzhang is currently only programmed to do boson sampling. “In the near future, scientists may increase Jiuzhang's possible output states- a key indicator of computing power,” Lu Chaoyang, another key researcher behind Jjuzhang, told China Daily.

1. What can we learn about Jiuzhang?

A．It is the first to take advantage of quantum computation.

B．It calculates 100,000 times faster than Fugaku.

C．It is the fastest to perform Gaussian boson sampling.

D．It took Chinese scientists a year to create the computer.

2. What makes Jiuzhan's computing power superior to classical computers?

A．The way it deals with data.	B．The number of bits it uses.
C．The common materials it uses.	D．The conventional solution.

3. What do paragraphs 5 and 6 mainly talk about?

A．The current situation of quantum computing.

B．The significance of the creation of Jiuzhang.

C．Future research on quantum computing.

D．What needs to be improved with Jiuzhang.

4. What is the main purpose of the article?

A．To inform readers of a new invention.

B．To explain how quantum computers work.

C．To compare different supercomputers.

D．To introduce the development of computers.

3 . Doramise Moreau is an incredible woman. Since the start of the coronavirus pandemic, she has cooked thousands of meals all by herself to feed the hungry in her area. In a time of uncertainty, Moreau brings light to her community by ensuring that everyone is well fed.

Moreau is a 60-year-old widow who lives with her children, nephew, and three grandchildren in Florida. She works as a caretaker at a technical school. Every day, she would walk to work or take the bus because she didn't have a car.

When the pandemic began, Moreau partnered with a church. Every Thursday and Friday, she borrows the church truck to buy groceries. She then devotes her time to cooking meals in their kitchen. On Saturday, church volunteers serve the food and also deliver it to those who are housebound.

Moreau goes above and beyond to help those around her. When the church couldn't afford a cleaner, Moreau didn't hesitate to help. Each morning, Moreau prepares Haitian tea to fight off colds, offering them to the police, church staff and community leaders.

Hunger is now prevalent across the US. As stated on Feeding America, the pandemic has caused more than 42 million people a lack of access to a consistent food supply. Due to this, people come to Moreau for a meal. For the 1,000 to 1,500 meals she prepares every week, she makes traditional Haitian recipes. She serves baked fish, roast turkey, rice and beans, and fried chicken.

For all that she has done, Moreau was nominated (提名) by community leaders to receive a new Toyota Corolla , complete with a red bow. She can now drive to work and to the grocery shop to buy food for the community meals.

Her strong devotion to helping people in need makes her a true role model. With each meal she lovingly prepares, she brings warmth and hope into the world.

1. What is Moreau?

A．A cook.	B．A caretaker.
C．A teacher.	D．A volunteer.

2. What does Moreau usually do every Thursday and Friday?

A．She learns to drive a truck.

B．She helps to clean the church.

C．She interviews some volunteers.

D．She cooks meals in the church.

3. What does the underlined word “prevalent” in Paragraph 5 mean?

A．Common.	B．Popular.
C．Reliable.	D．Urgent.

4. Which of the following words can best describe Moreau?

A．Generous and proud.	B．Considerate and careful.
C．Devoted and helpful.	D．Loyal and reliable.