词汇应用。

     I think life in the year 2050 will be very 1_______ (difference) from life today．Many changes 2 _______ (take) place．What will the changes be?

     There will be more people in the world and most of them will live 3_______(long) than today．More

land will be used 4 _______ (build) new towns and houses．

     Computers 5 _______ (be) much smaller and 6_______ (use) and there will be at least one in every

home.Computer science will be one of the most important 7 ______ (subject) for students at school．

     Working conditions (条件) will be 8  _______ (improve) a lot．9_______(danger) and hard work

will be done by robots．People 10 _______ (have) more time for sports and watching TV．11 _______ (travel) will become much easier because of modern transportation．People will 12 ______ (probable)

go to the moon for vacation．

被叫摘机应答时，交换机停送铃流和拨号音。