扬州历史上曾经有很长一段时期是我国商业贸易最繁荣的城市，后来逐渐萧条的原因是 [

阅读理解。

     Do you know that fish comes out of eggs when it is born(出生)? After the little fish comes out of the egg, it eats

the food in the egg. When it is big, it leaves the egg. It swims in the water.

     You can see the eyes and nose. Its ears are hidden(藏) in the head.

     Some fishes eat other small fishes. Some fishes have small mouths and teeth and they often eat plants(植物).

根据短文内容用适当的单词填空.

     The fish is in an (1)__________ before it is born. The fish eat the (2)_________ in the egg after they come out

of the egg. When the fish is big, it doesn't (3)__________ in the egg any more. In fact(事实上), a fish (4)_______

ears, but they are hidden in the head. (5)________ big fishes eat small fishes.

在初期支护基本稳定后，不用进行永久支付护衬砌。

GB7588-2003标准从（）开始实施，过渡期（）年后，相应GB7588-1995废除。

额窦囊肿侵犯破坏其后壁时出现的特异性体征是（）。

A.可触及与心律一致的波动

B.波特隆起

C.瞳孔散大

D.眼球向下移位

E.眼球向上移位

工程施工作业人员要牢记（）关系你我他的警语。

A.成本

B.安全

C.工期

D.卫生