位于哈尔滨市太阳岛风景区内的哈尔滨冰雪艺术馆将冰城冬季的特色旅游项目——冰雕搬进了室内，让游客在夏季观赏冰雪景观，体验冬季才能感受到的乐趣。下列说法正确的是（）
| A．现在观赏此景观时应注意观赏时机 |
| B．冰雕属于自然景观 |
| C．冰雕与哈尔滨市所处自然环境有关 |
| D．该旅游资源具有独特性 |
In our school, the students have three_____ courses, and seven______ entrepreneurial education courses .
| A．required; alternative | B．requiring; alternative |
| C．required; alternate | D．requiring; alternate |
I should consider how to____the news about the Navy celebration in Qingdao in my computer so that I can finfd it fast.
| A．classify | B．recognize | C．store | D．accumulate |
Yao Ming is my favourite basketball player. I regard him____ other players.
| A．more superior | B．more superior than | C．superior to | D．superior than |
His factory broke down because of the financial crisis, but it was different_____ of me, I owed the copyright of products.
A in caseB. in the eventC. in the caseD. in no case
It’s not easy for the expert to ______ pig flu.in humans from regular human seasonal influenza.
| A．distinguish | B．separate | C．identify | D．recognize |