[多选题]“金税三期工程”通过（ ）的建设，形成一个网络覆盖率100%，年事务处理量近100亿笔、税务机关内部用户超过60万人、纳税人及外部用户超过亿人（户）的全国税收管理信息系统。
A.一个平台
B.两级处理
C.三个覆盖
D.四类系统
E.五级操作

Supermarket shoppers have never been more spoilt for choice. But just when we thought traditional systems of selective farming had created the most tempting array of foods money can buy, we are now being presented with the prospect of genetically created strains of cabbages, onion, tomato, potato and apple.
It may not tickle the fancy of food purists but it fires the imagination of scientists, last week they discovered that the classic Parisian mushroom contains just the properties that, when genetically mixed with a wild strain of mushroom from the Sonora desert in California, could help it grow en masse while at the same time providing it with the resilience of the wild strain.
66. ______
"We have found a way of increasing the success rate from one to 90 per cent."
This is just one of the many products that, according to skeptics, are creating a generation of "Frankenfoods". The first such food that may be consumed on a wide