1．（1）As a saying goes：you're what you eat. However，if you've watched plenty of videos which were recorded by Xin Jifei，you'll doubt what you're eating.According to his videos，maybe there's no beef in beef and there's not milk in the milk tea. "All thanks to technology and hard work，" （2）這個句子在辛吉飛的每一個視頻里都能被聽到. When Xin Jifei completed the videos，he would say the key sentence and make faces. （3）These videos seem funny. They are like science experiments in school. "Hex technology" makes countless people follow his videos and think about the old topic-food safety.With the development of our living standards， （4）it's normal for people to care about the food safety. Some think Xin Jifei is selling worries and making money.I do disagree.At least， （5）現(xiàn)在，一些年輕人更喜歡在家做飯而不是外出就餐.Luckily，Chinese government has made strong laws against the illegal use of additives effectively.
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2．Hi!I'm Pleasant Sheep（喜羊羊）.Do you（1）（/n??/）me？I'm a boy.I'm seven years（2）.I have a small（3）（ma?θ）and a small nose.My eyes are big.I have four good（4）（friend）.We are movie stars（電影明星）.We are（5）the same class.They are kind to（6）（I）.Pretty Sheep（美羊羊）is my good friend.She is nice.Does she（7）（have）big eyes？Yes，her eyes are big，too.Our monitor（班長）is a（8）（/g?：l/）too.She is eight.She has a big head，（9）her eyes are small.We（10）（like）her very much.

3．How much do you know about Antarctica（南極洲）？Antarctica is the coldest，windiest（1） emptiest place in the world.There is little rain all year round，and it is one of the world's （2） （dry） places.It is also home to penguins and （3） （difference） sea life along its coast.Cold weather over millions of years has made it very icy.In some places，the ice is about 1.9 km thick.Humans （4） （explore） Antarctica for many years.It is said that the first man to reach Antarctica was John Davis， （5） US seal hunter.After that，thousands of tourists visit the coast of Antarctica during the summer. （6） is from November to February.They get there（7） （see） penguins，seals，whales and a beautiful icy view.
   Do you know who lives and works in Antarctica？They are （8） （most） scientists and their assistants.The Polar Program in the US （9） （support） the study of Antarctica.It sends more than 100 scientists to Antarctica each year.In Antarctica，some scientists study the （10） （move） of glaciers（冰川） and the activity of volcanoes（火山）.Other scientists study animals like whales，seals，birds and fish.