Unit 6课文重难点过关外研版选择性必修第四册.docx

外研版选择性必修第四册Unit 6课文重难点过关.单词拼写1The governor said all applications must be _(递交) by Monday.2Perhaps she has caught a cold，as she has been _（打喷嚏）.3Believe it or not，the air is full of millions of _(看不见的) germs.4The first question he asked me was quite _(直截了当)，which made me rather embarrassed.5Working out regularly will help keep your _（肌肉） strong and avoid back problems.6I am so thirsty；would you mind _（拿） a glass of pure water for me?7This is an _(了不起的) product，but not everyone is fond of it.8To detect these waves in the vast universe，astronomers use several kinds of large ground-based _（望远镜）.1.submitted 2 sneezing 3 invisible4 straightforward 5 muscles 6 fetching 7 awesome 8 telescopes.选词填空下面的短文是P6869的课文改写，请从下表中选择合适的词汇并用其适当的形式完成此文。explore；engaged；larger；unexplored；look back to；came into existence；advanced；with the help ofEven today，much of the universe remains 12._.In reality，humans can see very little of the night sky with the naked eye and the universe is far 13._than people once imagined.However,14._ telescopes，humans can see much farther into space.Now，many countries are 15. _ in building even more 16._ telescopes，which make it possible for people 17._ regions of space billions of light years away.Perhaps in the future，people will be able to 18._a time long before light 19._.12.unexplored 13 larger 14 with the help of 15 engaged 16 advanced 17 to explore 18 look back to 19 came into existence.经典句式1现在分词作原因状语由于不知道星星是什么，古代的人们用他们的想象力创造了一个空中的世界。_2it作形式主语，that从句为真正的主语很快，人们认识到，太阳只是银河系中数十亿颗恒星中的一颗。_3so.that.如此以至于宇宙中还有如此多的东西没有被探索过，所以我们对宇宙的发现之旅才仅仅是个开端。_1 Not knowing what the stars were，people in ancient times used their imaginations to create a world in the sky.2 Soon，it was understood that the Sun was just one star among billions in the galaxy we call the Milky Way.3 So much of the universe remains unexplored that we are still close to the start of this incredible journey of discovery.七选五Solar energy，which comes from the suns rays，is used for electricity，hot water，and cooking. 1 When traveling a long way and entering the earths atmosphere they become dilute(稀薄的)Though solar energy is known to be environmentally friendly，it has not only some advantages but also some disadvantages.Lets start with the simple advantages of solar energy. 2 To make electricity or heat with solar energy you only need the suns rays and dont use oil.Solar energy is cheaper compared with electric heating. 3 If you live in a faraway area where there are no power lines，using solar energy can be the answer.Even though all of the above are very useful，solar energy also has some disadvantages.The main disadvantage of solar energy is that its dilute.This means you have to have many solar collectors fixed around your house. 4 Another disadvantage is that solar energy cant be produced in all the places.If youre living in a part of this beautiful planet where there is not much sunlight then using solar energy could be a problem.Of course if you live in desert areas，the sun produces much sunshine for the most part of the year and it is ideal for solar energy collecting. 5 Therefore if you need electricity or hot water during the night，like many of us do，it can be a problem.Youll need battery systems that can store solar energy for later use.ASolar energy is clean.BThe sun has much energy.CLastly，the sun only shines during the day.DThe suns rays come from the faraway sun.EThat is another big advantage of solar energy.FFixing solar energy in your home is a good choice for you.GSolar energy may be cheap but the solar collectors are expensive.1D2A3E4G5C