During the past three decades,China    1     (witness)the railway industry’s transformation from making slow trains     2     making domestically manufactured high-speed trains

In 1997,China started     3     (it)first significant railway speed increase. Since then, the country’s high-speed rail technology has continued to achieve breakthroughs250 km/h to 350 km/h and then to 400 km/h.Made-in-China high-speed trains not only operate     4     (smooth) in freezing weather and desert    5     (region),but they also come with driverless technology Millions of railway workers take pride in their roles as the company provides    6     clear route for their professional advancement.Through    7     (train), practical operation and assessment, they can move up as a wiring worker to a technician, an operator an expert and even a scientist

As trains become faster and more intelligent, their software and hardware systems will become more complex thus requiring    8     (high)technical competence for daily maintenance by railway workers. For these diligent railway workers    9     have skilled craftsmanship, improving their skills tirelessly to ensure safe operation of the trains seems like an     10     (end)learning curve throughout life.

Conquering the Scientific World, Dr. Roberto Crea

Although the scientists that brought a revolution into human life are no more, there remain a few who are following in their footsteps to find permanent solutions to persistent human life problems and add value, ease, and comfort to people’s lives.     1     fits the context perfectly is worth worshiping. And Dr. Roberto Crea is the one of them.

Born on July 1, 1948, in Italy, Roberto Crea was a genius kid.     2    (graduate) from the University of Pavia in Italy, he moved to the Netherlands for his specialization later on and finally enrolled at the University of Leiden, where he studied the synthesis of nucleorides (核苷酸), the basic units that are required to build a DNA.     3     he was immensely interested in and exceedingly curious about it, he was determined to specialize in the DNA/RNA synthesis by the phosphotriester method. Roberto’s strong chemistry background paved the way for a historical invention. And his marvelous research at the University spoke volumes.

With Genetech funding Dr. Crea’s on-going research on gene synthesis, Crea invented a new procedure that streamlined the chemical synthesis of oligonucleotides and synthetic genes. His profound knowledge, along with the collaboration of the excellent Genetech team, utilized this discovery to produce the human insulin genes. It was his invention that allowed Genentech     4    (label) as the first producer of human protein. This was made from therapeutic interest in bacteria for the benefit of hundreds of millions of people     5    (suffer) from diabetes all over the world.

His efforts did not cease     6     discovering the synthetic insulin(胰岛素); in fact, he was more than driven and strived to make more contributions to the field of biotechnology. In 1982, Roberto switched roles slightly to become a scientist entrepreneur and launched his company, Creative BioMolecules. This venture     7    (initial) functioned as a service company but later began producing therapeutic protein substances.

Another notable contribution to the medicine industry was the life-changing discovery of ziconotide, which     8    (take) place when Roberto served as the scientific director at Neurex. His team of experts in neuroscience discovered this drug under his teachings and guidance. According to leading scientists and researchers, this drug is more powerful and effective than morphine, a powerful drug used to reduce pain, and     9    (good) part of this is that it has zero side-effects.

Established as one of the greatest researchers and scientists America has ever known, Dr. Roberto Crea can be looked up to as an idol in Biotechnology and an inspiration for many individuals     10     dream of adding value to humanity with the help of science is deeply rooted.

In Lin Qiaozhi’s eyes, life is precious. When others entrusted her with their lives, it was virtue     1     carried her through a life of hard choices. She did not choose     2     (marry) as the majority of girls did, but chose to study medicine.     3     (fortunate), her brother responded against her choice and complained about it, thinking of the high tuition fees. Atter graduation, Lin Qiaozhi won a scholarship from a union and     4     (hire) as a resident physician in a famous hospital. Once     5     (appoint) as scholar to a clinic in a faraway country, she impressed her colleagues by     6     (reject) a well-paid offer. In the decades after liberation, Lin Qiaozhi was elected     7     leaders in numerous key     8     (position) and led all the staff to the medical cause of China. She published     9     great deal of medical research,     10     made her well known to the world.