Life in the future will be different from life today.But what will the changes be? The population(人口) is growing fast . There will be many people in the world and most of them will live to over 100 years old .

Computer will be very small and useful,and  there will be computers in every home .Travelling will be  very cheap and easy.

And many people will go to other countries for holidays. There will be changes in our food ,too. There will not be much room for cows and sheep, so meat will be very expensive .Maybe  no one will eat it every day .They will eat many fruits and vegetables .Maybe people will be quite  healthy . Work in the future will be different, too. Robots will do hard work .So many people will not have enough work to do.

根据短文内容，判断句子正（T）误 （F）

小题1:All the people in the world will have long life in the future.         

小题2:Life in the future  won’t  be the same as life today.  

小题3:Travelling is very cheap and easy today.  

小题4:People will be healthy because they eat fruits.  

小题5:All the people will not work.  

可以抑制细菌核糖体50S亚单位，阻碍细菌蛋白质合成的抗菌药物有（）

A.林可霉素类

B.大环内酯类

C.头孢霉素类

D.酰胺醇类（氯霉素）

E.氨基糖苷类