Unit 5 Lesson 25 Let's Do an Experiment!（作业课件）-【黄冈金牌之路·练闯考】2023-2024学年九年级英语上册(冀教版)

Lesson 25　Let's Do an Experiment! 英语 九年级上册 冀教版 练闯考 一、根据句意及首字母或汉语提示填写单词。 1．I don't know which answer is __________ (正确的). 2．Can you tell me some good m_______ to learn chemistry? 3．Don't put so much _________ (压力) on her.After all，she is only a kid. 4．Most of my classmates like doing e_____________ in the physics class. 5．I think this system is very _____________ (科学的). correct ethods pressure xperiments scientific 二、用括号内所给单词的适当形式填空。 6．We have ________________ (discover) that light moves faster than sound. 7．He carefully _________ (pour) the milk into the glass. 8．The boss _____________ (force) the workers to work over 9 hours a day. 9．Tom is strong enough ___________ (hold) the heavy box. 10．From this story，Jenny ____________ (conclude) that nothing is impossible if you put your heart into it. discovered poured forced/forces to hold concludes 三、用方框中所给短语的适当形式填空。 11．She ______________ the tape，and saw a beautiful picture on the other side. 12．Please _________ your coat ______ and hang it on the wall. 13．Can you help me _____ the bottle ______ the apple juice? 14．Remember to take an umbrella，or you will ________． 15．She ____________ passing the exam，because she has prepared for it for more than a month. turned over take off with fill be sure of，get wet，turn over， take...off，fill...with get wet is sure of 四、单项选择。 ( )16.He is very sure ________ passing the exam，because he has got ready for it. A．of B．with C．to D．for ( )17.________ the plate upside down，and you can find where it is made. A．Put B．Take C．Turn D．Hold ( )18.This is the first birthday gift ________ I received.I've kept it many years. A．which B．that C．who D．what A C B ( )19.—It is very cold outside，dear.You have to ________ your warm jacket. —OK.I will，Mum. A.put on B．put off C.take off D．take up ( )20.—May I be allowed to choose a summer course? —It's up to you.You're ________to make your own decisions. A.too old B．enough old C.old enough D．old too A C 五、连词成句。 21．do，experiment，let's，an Let's do an experiment． 22．a，scientific，what，method，is What is a scientific method? 23．sure，to，the football match，are，win，we We are sure to win the football match． 24．the，don't，bottle，upside down，turn Don't turn the bottle upside down． 25．the，makes，window，the force of，open，the wind The force of the wind makes the window open． 六、阅读理解。 What is the sky? How high is it? What colour is it? What birds can live above it? These questions are difficult to answer，aren't they? In fact，the sky has no colour.Then why does the sky look blue? We know that there is air around the world.When planes fly，they need air to lift their wings.Planes can't fly very high.That is because the air gets thinner when they go higher. The same will happen to us if we go high enough.If we go up about 1，200 kilometres from the earth，we'll find no air there.Some birds can fly into the sky as high as a plane，but they cannot fly or live without air. Looking up above us，you will see the blue sky with white clouds.It is usually light blue.The colour would be bluer when you see on the top of a high mountain.And you will see fewer clouds in the sky between you and the sun. Sometimes the sky doesn't look blue.When the sun rises and falls，you will see red，orange，and other colours in the sky.Such are the most beautiful moments of the day. Who can see the colours of the sky high above the earth? The astronauts! They can see those beautiful colours of the sky from the outer space.However，before flying into outer space，they sit in a spaceship high above the earth，and there is no air at all.The sky would be that dark and its colour would be black. Now you may understand that we see colours because the air scatters (使散射) the sunlight.Light travels through the air.Without air，there would be no light or colours. ( )26.Planes can't fly as high as possible because________. A.the sky is blue B.the wings are heavier C.the sky has no colour D.the air becomes thinner ( )27.When you stand on the top of a high mountain，you will see________. A.more air B．bluer skies C.more colours D．more clouds D B ( )28.We might see many colours in the sky at________ during the day. A.6：00 a．m. B．9：00 a．m. C.1：00 p．m. D．3：00 p．m. ( )29.The sky changes colours because________. A.it's colourful itself B.the world is colourful C.the sunlight has colours D.the air scatters the sunlight A D ( )30.What does the passage mainly talk about? A.Birds can fly without air. B.Why does the sky look blue? C.The living of the astronauts. D.Why can the plane fly very high? B $$