专家与新手相比，专家在专门领域的短时记忆和长时记忆能力都更强。最适当的解释是 (

阅读短文，从方框中选择适当的单词填空（每词限用一次）。

Do you like elephants? Elephants are 小题1:__________________ animals. They can play soccer or music. They can 小题2:_______________ draw very well. People say that “an elephant never forgets”. Elephant can walk小题3: _______________ a long time and never get lost. They can also remember places with小题4:_______________ and water. This helps them to live. But elephants are in great dangerous. People cut down trees so elephants are losing their homes. People also kill elephants for their ivory.

Today there are only about 3,000 elephants (over100,000 before) We must save the trees and not buy things小题5:. _______________ of ivory(象牙).

在建筑幕墙工程实施的过程中，对钢材表面质量的检验应在( )条件下，不使用放大镜，观察检查。

A．自然散光
B．人工散光
C．柔性散光
D．介质散光

建筑工程一切险的被保险人不包括( )。

A．审批人

B．总承包商

C．业主

D．分包商

严格执行《关于印发继电保护高频通道工作改进措施的通知》[调调（1998）112号]的有关要求，高频通道必须敷设50mm铜导线。

简述三角洲的分类.