Cloning is a way of {#blank#}1{#/blank#}(make) an exact copy of another animal and plant{#blank#}2{#/blank#} has two major uses. One is{#blank#}3{#/blank#} gardeners use it to produce commercial quantities of plants. The {#blank#}4{#/blank#}is that it is valuable for research on new species and for medical research on animals. {#blank#}5{#/blank#}, the process of cloning is difficult to undertake.

    Many attempts to clone mammals failed. The first successful clone, Dolly the sheep, made the whole {#blank#}6{#/blank#}(science) world follow its process, though it had {#blank#}7{#/blank#} problems than the normal sheep. On the other hand, Dolly's appearance {#blank#}8{#/blank#}(raise) a storm of objections and had a great impact {#blank#}9{#/blank#} the media and public imagination. Different people have different opinions of it. However, scientists still wonder whether cloning will help {#blank#}10{#/blank#} harm us and where it is leading us.

    When Robert Lee was in primary school, he hated to see his classmates throwing away half-eaten sandwiches after lunch. His parents had taught him and his older brother not to waste food. “They said it was bad,” says Robert, 27.

    While {#blank#}1{#/blank#} (study) finance and accounting at New York University, Robert remembered this lesson and joined Two Birds One Stone, a food rescue club at school {#blank#}2{#/blank#}delivered, five days a week, uneaten pasta, vegetables and other leftovers (剩余食物) from the dining hall to nearby homeless {#blank#}3{#/blank#} (shelter).

    When Robert and fellow club member Louisa Chen entered a college {#blank#}4{#/blank#} (compete), they came up with a slightly different idea for a food rescue non-profit group—{#blank#}5{#/blank#} (it) program wouldn't have a donation minimum, would operate seven days a week, and would be staffed {#blank#}6{#/blank#} (entire) by volunteers.

    Surprisingly, {#blank#}7{#/blank#} idea stood out. Robert and Louisa Chen won the first place. {#blank#}8{#/blank#} the $1,000 prize, they founded Rescuing Leftover Cuisine (RLC) in July 2013. In just the first few weeks, Robert steam delivered a donation of enough noodles and meatballs to feed 20 people in line at a New York City homeless shelter that had run out of food. Only a year into his finance job, Robert gave up his six- figure salary {#blank#}9{#/blank#} (focus) on RLC. So far the organization {#blank#}10{#/blank#} (reach) sixteen cities around the country.

    Letters as a way of communication have long given way to phone calls and WeChat messages. But a TV show, Letters Alive, is helping bring this old way to keep in touch back{#blank#}1{#/blank#}the present.

    Letters Alive took{#blank#}2{#/blank#}(it) idea from a UK program, Letters Live, released in 2013. Both{#blank#}3{#/blank#}(show) feature famous actors and actresses, but there{#blank#}4{#/blank#}(be) no eye－catching visual effects or any regular showbiz(娱乐圈) activities. Instead, it's just a live event{#blank#}5{#/blank#}remarkable letters selected from a wide time span and a diverse range of subjects are read. There is, for example, a passionate letter from Huang Yongyu to playwright Cao Yu 30 years ago to criticize his lack of {#blank#}6{#/blank#}(create).

    Every letter is like a small piece of history. By hearing them{#blank#}7{#/blank#}(read), it's as if we are being sent back in time to experience a moment that we would otherwise never have had the chance to.

    Compared to{#blank#}8{#/blank#}(publish) texts, letters also{#blank#}9{#/blank#}(natural) come with a personal touch. As well as celebrating the pain, joy, wisdom and humor, Letters Alive  {#blank#}10{#/blank#}(commit) to promoting Chinese literature since first run.

Coffee is probably world's least expensive success power tool to increase focus, drive and even the life span. {#blank#}1{#/blank#}(fortunate) we may not be enjoying its benefits or pleasure too much longer. According to ecologists，there is a good chance {#blank#}2{#/blank#} the varieties of coffee that we drink today {#blank#}3{#/blank#}(be) extinct in 20 or 30 years. The problem, of course, is the pace of climate change.

Coffee is a crop that is only grown in a thin band {#blank#}4{#/blank#}(call) the "coffee belt" close to equator(赤道), which is extremely vulnerable(易受...伤害的) to climate change. If the air is too hot {#blank#}5{#/blank#} too cold, it prevents the growth of coffee plant. Climate change also creates {#blank#}6{#/blank#}(environment) stress, which spreads pests and plant diseases. Almost all the coffee grown in the world today is one of two species, arabica or robuasta, both of {#blank#}7{#/blank#} might be wiped out in this way. There are other species existing only in Ethiopia, {#blank#}8{#/blank#}country that climate change is happening. In other words, climate change is eating away the root source that we might turn to {#blank#}9{#/blank#}replacement species.

What to do? Well, take the time {#blank#}10{#/blank#}(enjoy) each cup of coffee you drink.