There are two ways to look at this question {#blank#}1{#/blank#}relating to eggs in general or to the chicken egg specifically. Either way, the answer is the same: the egg came before the chicken.{#blank#}2{#/blank#} the case of eggs in general, animals such as dinosaurs were laying eggs long before the modern chicken came into existence,{#blank#}3{#/blank#} (mean) that in this sense, the egg predated (早于) the chicken by thousands of years. As for the chicken egg specifically , according to NPR's Robert Krulwich, the modern chicken{#blank#}4{#/blank#} (hatch 孵化) from an egg, meaning the egg came first.

    The key to understanding the answer, and indeed the question itself, is to understand what the question is getting at. The dilemma is to understand {#blank#}5{#/blank#} a chicken-like bird transformed into{#blank#}6{#/blank#} is known as a modern chicken after being hatched or whether two chicken-like birds {#blank#}7{#/blank#} (lay) and fertilized an egg that then hatched a fully formed chicken. In this case, the latter option is the most realistic, therefore answering the question of which came first.{#blank#}8{#/blank#} (essential), a bird that was similar to a hen and another bird that is similar to {#blank#}9{#/blank#} rooster combined their genetic material, leading to a gene mutation (突变) that resulted in the chicken that is{#blank#}10{#/blank#}(good) known and loved today.

    Woodblock painting（木版画）are often hung at homes during the Chinese Lunar New Year.

    For many Chinese, the bright-colored paintings are quite time-limited. As soon as the festival comes to an end, these print works are at once thrown away. {#blank#}1{#/blank#}, these short-lives New Year paintings require a year of hard work by the artists, many of {#blank#}2{#/blank#} have devoted their entire life to this traditional folk art.

    Yang Luoshu, a 92-year-old man from Weifang City, Shandong Province, is {#blank#}3{#/blank#} those who have had a great love of the art. Yang has worked as {#blank#}4{#/blank#} craftsman for 77 years, and has kept improving his carving skills with every piece of work.

    Yangjiabu New Year woodblock paintings, which Yang has fallen in love with, {#blank#}5{#/blank#}(appear) in the Ming Dynasty. As a national cultural heritage, it is now one of China's three {#blank#}6{#/blank#}(representative) of traditional folk paintings for the New Year, together with Tianjin's Yangliuqing and Suzhou's Taohuawu.

    {#blank#}7{#/blank#}(run) a centuries-old folk art family workshop named Tongshunde, Yang has carved all kinds of images, including flowers, birds, mountains, rivers and traditional Chinese gods. But he realizes that something must be changed {#blank#}8{#/blank#}(make) sure handmade New Year paintings live on. “We are now thinking about development, allowing the paintings to be more {#blank#}9{#/blank#}(create).” he said. For him, the next thing to do is to find qualified successors to ensure that the skills {#blank#}10{#/blank#}(pass) to younger generations.

    For thousands of years, fishes {#blank#}1{#/blank#} (feed) the people of Peru. It was only when the industrial fishing boats got started in {#blank#}2{#/blank#}1950s that people lost interest in the fish. Modern fishery turned most of its catch into fishmeal(鱼饲料) for feeding other animals. In fact, most of the fish {#blank#}3{#/blank#} (catch) yearly around the world are for use other than eating, and 90% of them are {#blank#}4{#/blank#} (perfect) good to eat.

    White is a researcher at the University of British Columbia and he spent years {#blank#}5{#/blank#} (research) into fishery catches around the world. According {#blank#}6{#/blank#} his study, about 27% of ocean fish which were caught became fishmeal or fish oil. Those products were used to feed farmed fish or used in agriculture.

    "There could be a {#blank#}7{#/blank#} (good) use of these fish," says White. Instead of feeding fish to fish, the fish could feed people, especially those {#blank#}8{#/blank#} need high-quality protein. But the reason why that doesn't happen is a {#blank#}9{#/blank#} (combine) of economics and regulations(法规). In many places, a fisherman can get more money if he sells his catch for fishmeal than if he sells it to the locals for {#blank#}10{#/blank#} meals. And in Peru, a change in how fishes are handled could both satisfy the need to feed the people and supply the fishmeal industry.

    Many people living in cities see riding a bicycle as good exercise. But, a recent medical {#blank#}1{#/blank#} research warned that cyclists should think twice before cycling in the streets: it actually does more harm than good {#blank#}2{#/blank#} their bodies.

    Is cycling in cities really bad for your health? Probably yes. The main danger comes from the air around you. Breathing {#blank#}3{#/blank#} in air pollution from taxis and buses can damage blood vessels(血管).Scientists say the damage could outweigh the health benefits of cycling.

    David Newby, a British {#blank#}4{#/blank#} researcher at Edinburgh University broke the news. In his tests, 15 healthy men cycled {#blank#}5{#/blank#} on exercise bikes in a room with levels of air pollution similar to those found {#blank#}6{#/blank#} on a crowded city street. After an hour of cycling, the scientists found their blood vessels became less flexible and produced less of a protein(蛋白质){#blank#}7{#/blank#} the heart needs. The damage leads to the early stages of heart disease. What's worse, the faster a cyclist pedals (蹬车),{#blank#}8{#/blank#} more air they breathe in. So those who believe {#blank#}9{#/blank#} they are improving their fitness the most are storing up the biggest trouble for {#blank#}10{#/blank#}.

My wife and I like watching plays, so we will go to the theater whenever we have time. But before we buy tickets, we would like to know if the play is good or bad. When a new play comes, we {#blank#}1{#/blank#}  (usual) read the newspaper to get information about it. Last week a new play was put on at the theater. The newspaper said it was very {#blank#}2{#/blank#} (interest) so we decided to go on Saturday night. My wife took a long time to make her {#blank#}3{#/blank#} (decide) about what to wear and we left our house a little late. {#blank#}4{#/blank#} the time we got to the theater, the first act had already {#blank#}5{#/blank#} (begin). After the play was over, we met some friends, {#blank#}6{#/blank#} lived next to us several years ago. Then we went dancing. By the time we got home, it was about two o'clock in the morning. I'm not used to {#blank#}7{#/blank#} (stay) out so late and I was {#blank#}8{#/blank#} (extreme) tired.

When I was younger, I did not have the money to go out for {#blank#}9{#/blank#} evening like this. Though I can afford it now, I don't have the energy{#blank#}10{#/blank#}(enjoy) it.