题目内容：

Massachusetts （美国一州名） became the first state in the nation to ban the dumping （倾倒;抛弃） of electronic equipment such as computer monitors and television sets．It means people there can no longer put computer monitors, TV sets and other devices containing glass picture tubes out on the street for pickup by garbage cleaners．

         Official said much of this equipment is loaded with poisonous heavy metals such as lead, cadmium and mercury．These poisonous heavy metals could go into groundwater or be released （释放） into the air．

         The Boston Globe reports the state has set up a system to recycle techno-garbage at state expense through community recycling centers．

         Robin Ingenthron of the Massachusetts Department of Environmental Protection said the state has been trying to get its electronics-recycling program in place ‘before the future wave of electronics hits’．The National Safety Council estimates some 300 million computers will enter the nation’s waste system in the next few years．

         In addition, millions of people will be getting rid of their old television sets．New high-quality digital televisions and new rules will make old TV sets no longer in use over the next several years．

1.The word ‘techno-garbage’ in the 3rd paragraph probably means ________．

         A．all kinds of dirty things                                       B．deserted TV sets

         C．heavy metals                                                             D．used electronic equipment

2.Which is NOT a reason that the state enforces （强制执行） a ban on electronic equipment dumping?

         A．This kind of garbage is poisonous．

         B．Recycling systems are not working well．

         C．The poisonous heavy metals can go to the underground water and the air．

         D．There will be much more electronic garbage soon．

3.According to the last paragraph many people will be dumping their TV sets because ________．

         A．they are broken                              B．they are poisonous

         C．new TV standards have come out               D．people will be tired of them

4.The passage tells us chiefly about __________．

         A．forbidding of a certain type of garbage dumping

         B．new problems of environmental protection

         C．household problems raised by computers and TV sets

        D．the handling of garbage