Yuan Longping is a great scientist, but his sun-burnt face and his slim, strong body are like those of millions of Chinese farmers, for whom he {#blank#}1{#/blank#}(struggle) for the past five decades. When he was young, hunger was a {#blank#}2{#/blank#} (disturb) problem. Since he graduated from Southwest Agricultural College in 1953, he has devoted his life{#blank#}3{#/blank#}developing a new kind of rice{#blank#}4{#/blank#}(call) super hybrid rice. The rice farmers are now producing crops{#blank#}5{#/blank#} (two) as large as before by planting his super-rice{#blank#}6{#/blank#}makes it possible to solve the problem of hunger.{#blank#}7{#/blank#}, he is not satisfied with his work, he still insists on his work to develop his rice. I think his work is of great{#blank#}8{#/blank#}(important) to the world.

    {#blank#}9{#/blank#} (thank) to his research, the UN has more tools in {#blank#}10{#/blank#}battle to rid the world of hunger. Now Yuan Longping is spreading his knowledge in many other less developed countries.

    Parents' Day is {#blank#}1{#/blank#} American event for the parents and families. {#blank#}2{#/blank#} (surprising), this event was not even there two decades ago.{#blank#}3{#/blank#} was only in 1994 that this event got officially accepted in the USA.

    It is very hard {#blank#}4{#/blank#} (say) when the idea of Parents' Day actually came into picture. But it can be certainly said that this event is born to honor and appreciate parents {#blank#}5{#/blank#} are responsible for the upbringing of the new generation. Their hard work {#blank#}6{#/blank#} endurance (耐力) open up a new horizon for the humankind.

    As said earlier, Parents' Day {#blank#}7{#/blank#}(get) its acceptance in 1994. President Bill Clinton passed the law for {#blank#}8{#/blank#}(recognize), uplifting, and supporting the role of parents. It was decided that the fourth Sunday of every July would be celebrated as Parents' Day, which is similar {#blank#}9{#/blank#} Mother's Day and Father's Day.

    The tradition {#blank#}10{#/blank#} celebrating Parents' Day is relatively new. But within few years after its acceptance, the event has spread its wings to the whole world. Now the event is widely adopted.

    Jane felt sweet in the drive－through line at Heav'nly Donuts. Just the day before, a stranger ahead of her in line had {#blank#}1{#/blank#} (generous) paid for her coffee. "The gesture made such a big difference in my day," says Eileen. She had recently lost her job as a doctor's {#blank#}2{#/blank#} (assist), and money was tight. But Eileen {#blank#}3{#/blank#} (inspire) to pay the $12 bill of the family in the car behind hers. {#blank#}4{#/blank#} she didn't know was that her kindness would set off a chain reaction. In two and a half hours, fifty-five drivers paid for the order of the person behind {#blank#}5{#/blank#} (they). The doughnut shop's employees {#blank#}6{#/blank#} (see) this before. This Heav'nly Donuts, in fact, is known as a special place, the customers of {#blank#}7{#/blank#} are considered as the "best in the world". But, even so, the workers were {#blank#}8{#/blank#} (amaze) that the shop had more than doubled its previous record by the end of the day.

    Now {#blank#}9{#/blank#} (work) as a chemist, Jane visits Heav'nly Donuts every Saturday morning, picking up a coffee and paying for the order of the customer behind her. "Actually, I wish I {#blank#}10{#/blank#} (start) this deed much earlier." She said.

    China's Chang'e 5 mission {#blank#}1{#/blank#} (successful) delivered samples of moon rocks and dust to Earth on December 17, 2020. It marks {#blank#}2{#/blank#} first time in 44 years that moon rocks have been brought back to our planet.

    The sample capsule landed in Inner Mongolia {#blank#}3{#/blank#} a little after 2:00 a.m. Thursday local time. The drop-off was the ending of a 23-day mission that began on November 23, {#blank#}4{#/blank#} China sent up Chang'e 5 from a site on Hainan Island. The mission's goal was {#blank#}5{#/blank#} (collect) at least four pounds of material and bring it back to Earth.

    The material collected by Chang'e 5 was from a site in the northwest region of the moon's near side. This area was formed more recently, and the rocks here {#blank#}6{#/blank#} (think) to be only about 1.2 billion years old now. That means scientists {#blank#}7{#/blank#}(study) the material could learn more about the {#blank#}8{#/blank#} (evolve) of the moon.

Although Chang'e 5 was a short mission, it was one of {#blank#}9{#/blank#} (complex) projects undertaken by the Chinese space program so far. The country is far from done with the moon—Chang'e 6, {#blank#}10{#/blank#} (it) second lunar sample return, is ready to launch in 2023 or 2024.