阅读下面一首诗歌，完成下面问题。

**送友游吴越**杜荀鹤去越从吴过，吴疆与越连。有园多种桔，无水不生莲。夜市桥边火，春风寺外船。此中偏重客，君去必经年。

（1）从诗歌的体裁上看，这是一首___\_，其中必须对仗的是_________。（2）这首诗中间两联向友人介绍吴越的美好风光，任选一联，展开想象加以描写。　_____________________________

While watching the games the other night, I came across an unbelievable sight. It was not a gold medal, or a world record broken, but a show of courage.
The event was swimming and started with only three men on the blocks. For one reason or another, two of them false started, so they were disqualified. That left only one to complete. It would have been difficult enough, not having anyone to race against, even though the time on the clock is important.
I watched the man dive off the bock and knew right away that something was wrong. I’m not an expert swimmer, but I can tell a good dive from a poor one, and this was not exactly medal quality. When he resurfaced, it was evident that the man was not out for gold — his arms were waving in an attempt at freestyle. The crowd started to laugh. Clearly this man was not a medal competitor.
I listened to the crowd begin to laugh at this poor man who was clearly having a hard time. Finally he made his turn to start back. It was pitiful. He made a few desperate strokes and you could tell he was worn out.
But in those few awful strokes, the crowd had changed.
No longer were they laughing, but beginning to cheer. Some even began to stand and shout “Come on, you can do it!” and he did.
A clear minute past the average swimmer, this young man finally finished his race. The crowd went wild. You would have thought that he had won the gold, and should have. Even though he recorded one of the slowest times in Olympic history, this man gave more heart than any of the other competitors.
Just a short year ago, he had never even swum, let alone race. His country had been invited to Sydney.
In a competition where athletes remove their silver medals feeling they have somehow been cheated out of gold, or when they act so proudly in front of their competitors, it is nice to watch an underdog.
68.From the passage we can learn that the young man _______.
A. made his turn to start back pitifully  
B. was skillful in freestyle in the game
C. swam faster than the average swimmer  
D. was not capable enough to win the medal
69.  The crowd changed their attitudes because _______.
A. they felt sorry for the young man         
B. they wanted to show their sympathy
C. they were moved by the young man       
D. they meant to please the young man
70.  According to the passage, “it is nice to watch an underdog” probably means _______.
A. it’s amusing to watch a man with awful swimming skills
B. it’s amazing to watch an ordinary man challenging himself
C. it’s cheerful for athletes to act proudly before their competitors
D. it’s brave enough for some athletes to remove the silver medals
71.  What’s the best title for the passage？
A. Go for it!                    B. Try again！
C. Compete for Gold!             D. Break a Record!

如果给人体注射灭活的甲型H1N1流感病毒，可预防甲型H1N1流感，那么灭活病毒在体内引起的免疫反应，正确的是

[  ]

A．B细胞接受刺激后形成效应B细胞，能使靶细胞裂解B．T细胞接受刺激后形成效应T细胞，能释放淋巴因子C．吞噬细胞接受刺激后形成效应细胞，能产生相应的抗体D．淋巴细胞吞噬该病毒后形成记忆细胞，能释放白细胞介素

环境保护
阅读图文资料，完成下列要求。
陕北高原南部过去以种粮为主，产量低。20世纪90年代成功引种优质苹果目前该地区苹果产量、浓缩果汁出口量位居全国前列。然而在果业发展中，大量施用化肥、农药影响果品品质、果渣露天堆放污染环境，农村薪柴缺乏等问题突出。

指出该地区过去种粮引发的生态环境问题。针对果业发展的问题，试从循环经济的角度设计解决方案。（10分）

在密闭容器中，aA（气）bB（气）达平衡后，保持温度不变，将容器体积增加1倍，当达到新平衡时，B的浓度是原来的60%，下列说法正确的是：

A．平衡向逆反应方向移动了；

B．物质A的转化率减少了；

C．物质B的质量分数增加了；

D．a>b；

对于工业制硫酸中接触室内的反应：2SO2（g)＋O2（g)2SO3（g) △H＜0。达到平衡时，只改变下列一个条件，平衡不发生移动的是：    

A．升高温度

B．恒温、恒容充入氧气

C．恒温恒容充入SO3

D．加入催化剂V2O5