题目

 Good morning, everyone, I am Li Hua from Xingguang Middle School. The topic of my speech is “Let’s Ride Bicycles”. As   1  (know) to us all,   2   the improvement of people’s living standards, cars   3  (become)a popular means of transport,   4  (bring) great convenience to our life.   5   , they have also caused some problems such as air pollution and traffic jams. How can we solve the problems then? As far as I   6  (concern) , bicycles is a good solution. For one thing, bicycles don’t need any petrol and they are energy-saving. For   7  ,bicycles are   8   (environment) friendly because they won’t give off waste gas. What’s more, riding bicycles is a good way for us to exercise and it is beneficial to our health. 9  , let’s take the   10    (responsible) to build up a carbon city by riding bicycles. Come on and join us! Thank you!                                答案：.1.is known     2.with     3.have become     4.bringing    5.However 6.am concerned   7.another   8.environmentally   9.Therefore   10.responsibility

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