Charles Darwin was an English     1     (science) who studied nature. He is known     2     his theory of evolution (进化论)．

Darwin was born on February 12, 1809, in Shropshire, England. In 1831, Darwin boarded a ship     3     (call) the HMS Beagle and set out on a fantastic five­year journey around the world. His goal was     4     (study) the natural history of the areas he was to explore. Darwin was     5     (amaze) at the variety (多样性) of species he saw on his journey. He noticed that although the different islands had similar animals and plants, many seemed to have changed to adapt (适应) to their local environments. He noted some     6     (difference) between the mockingbirds found on San Cristobal, Floreana and two other islands. This led     7     (he) to wonder why they varied from place to place.

Darwin first presented his theory of evolution by natural selection (选择) in 1858 to explain how animals adapted to their environment to survive. The idea of evolution     8     (be) not new then, but Darwin’s theory explained how evolution occurred. When Darwin published On the Origin of Species in 1859, the book was     9     immediate success. However, it was not popular with people     10     believed that all the animals on the planet had been made at the same time by one creator. But Darwin scientifically proved all the species on Earth had evolved from earlier species!

Robert Owens felt     1     (defeat) and helpless on Sunday as he waited in Louisiana’s capital city for one of the most     2     (power) hurricanes ever to strike the US.

The 27-year-old man had spent days     3     (anxious) watching long lines of cars leaving for safer locations as Hurricane Ida     4     (approach). He had hoped that his wife and two children would be among them. But leaving would have required money for gas and a hotel room—something they didn’t have.

Out of desperation, Owens went to the bank on Saturday and applied     5     a payday loan. But he     6     (tell) he didn’t have enough credit history.

“Our bank account is empty-we can’t afford     7     (leave),” he said. “A lot of us here in my neighborhood have to stay and wait, not knowing how bad it’s going to get,” he said. “It’s     8     terrifying feeling to think my family is getting left behind.”

“The fact     9     we are not middle class or above just keeps coming back to bite us again and again, in so many different     10     (direction)and ways. A simple payday advance is just one of them,” he said. “It’s like we have to pay for being poor, even though we’re trying not to be poor.”

8 . Shenyang—The remains of 117 Chinese People’s Volunteers soldiers killed in the 1950-53 Korean War returned to China on Sunday before the Commemorative Day of Martyrs.

This is the seventh annual repatriation (遣送), following a handover agreement signed between China and the Republic of Korea. and also the largest since the initial (最初的) return of 437 soldiers in 2014. Between 2014 and 2019, the remains of 599 soldiers were returned.

Earlier on Sunday, the ROK handed over the remains at a ceremony at Incheon airport outside Seoul. A Chinese military transport plane, escorted (护卫) by two Chinese fighter jets, carried the remains and belongings of the fallen soldiers back and landed at Taoxian International Airport at 11:18 am in the northeastern Chinese city of Shenyang near the border of the Democratic People’s Republic of Korea. Y-20 aircraft. the largest and most advanced domestically developed transport aircraft. carried out the task for the first time. It was labeled (贴标签于……) with the serial number 01. as a mark of high respect for the martyrs.

Vice Premier Sun Chunlan attended the ceremony along with CPV soldiers and citizens. China has never forgotten its fallen heroes and the contribution they made, Sun said in a speech.

Chinese people always remember the fighting spirit of defending the motherland, and China will remember the past and cherish peaceful international environment, Sun said.

Wang Guobin, a 92 year old CPV veteran, said. “I’m both happy and sad. I’m glad that after 70 years, they finally come home. And I am sad that they died in the 1950-53 Korean war and couldn’t come back until 70 years later.”

Many local residents lined the roads to welcome the martyrs home and show their respect.

The remains will be buried in a martyrs’ park in Shenyang on Monday. It is the resting place of all soldiers’ remains returned by the ROK since 2014.

This year marks the 70th anniversary of the CPV’S participation in the 1950-53 Korean War. A total of 2.9 million CPV soldiers entered the battlefield, and 197,653 of them were killed in the war.

9 . It might seem like something from a science fiction movie, but scientists today are working on ways to combine certain kinds of bacteria with tiny robots. Scientists want to use these creations to improve the way we give medical treatment. They claim that drug therapy (疗法), disease diagnosis, and even surgery could be greatly aided by the use of nanobiotechnology. Nano-means “tiny”, and bio-means “life”. This tiny technology will use living organisms in combination with electronics.

Electronics makers already use tiny robots to build complex but very tiny circuits. Medical scientists want to use these robots to repair patients’ damaged organs or to direct medicines to affect specific cells. For example, tiny robots could be engineered to deliver chemotherapy (化疗) directly to cancer instead of to the entire body.

Existing electronics are the right size, but they lack practical use. Robots that can be built small enough to enter a person’s cells would be too tiny to move on their own. Therefore, scientists want to use tiny organisms such as bacteria to act as vehicles for the robots. The bacteria will be “driven” through the bloodstream by magnetic pulses (磁脉冲). Once the bacteria are in the correct locations, the robots will be able to do their jobs. In theory, these robots will cause less damage to the body than traditional methods of delivering medicines or performing surgeries.

Nanobiotechnology has yet to be put into practice, but many people already have concerns about its use. Some people worry about the ethic (道德标准) involved with controlling live organisms—and the possible side effects for their human hosts.