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1、Unit4 Main Task 精品课件,crowded planet,What problems does Earth have?,What problems does Earth have?,Its becoming more and more crowded （拥挤的)and polluted（被污染）,Practise A: Would you like to move to Mars?B: I am not sure. Because _ what about you?A :_ Because_,friendly,angry,laser light,Planet Mars Bank,
2、online,two moons,low-gravity basketball,shopping malls,space fashion,hard to find,comfortable,never late,no air pollution,floats in the air,根据短文内容及首字母提示, 填写所缺单词。,Earth has a moon. What about o_ planets? Mars has two moons. And Jupiter has many moons. The moons of Jupiter travel a _ the planet in dif
3、ferent directions Jupiter is the l _ planet in size in our solar systemOver the years，scientists have found that Jupiter has i _ own small solar systemThey have found that Jupiter has at least sixteen and probably m _ than 16,ther,round,argest,ts,ore,B _ there are so many moons，scientists began to n
4、umber themThe numerals（numbers）tell the order，in which the moons were foundThey were slower to name the moonsAll of Jupiters moons now have a name as well as a n _ The first five moons to be discovered are known as the “inner moons”But they are not the closest to the planetThe closest is only 127,60
5、0 kilometers a _ from JupiterAll the inner moons circle the planet in counter-clockwise direction，that is，opposite of the hands of a c_ ,ecause,umber,way,lock,Jupiters middle group of moons are at least 11,100,000 kilometers from the planet They also move in a counter-clockwise directionThe four f _
6、 moons are at least 20,700,000 kilometers awayThese are called “outer moons”They circle in a clockwise direction How many more moons do you think will be discovered？,arthest,假设现在是公元2057年，你是一位从火星旅行回来的游客，接受大家的邀请，给学生朋友们写一个80个单词左右的简短介绍，介绍自己在太空中或火星上的所见所闻。(字数要求不包括所给的开头与结尾) Dear friends, _Are you interested in this red planet? Maybe you can visit there next summer.,Homework,
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