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                                                              A Trip to the Forest

     One day Bob took two of his friends in-to the mountains. They put up their tents (帐篷) and then rode

off to a forest to see how the trees were growing.

     In the afternoon when they were about ten kilometres from their camp (营地), it start-ed to snow. More

and more snow fell. Soon Bob could hardly see his hands before his face. He could not find the road. Bob

knew there were two roads. One road went to the camp, and the other went to his house. But all was white

snow. Everything was the same. How could he take his friends back to the camp?

     Bob had an idea. The horses! Let the horses take them back! But what would hap-pen if the horses took

the road to his house? That would be a trip of thirty-five kilometres in such cold weather!

    It was getting late. They rode on and on. At last the horses stopped. Where were they? None of them

could tell. John looked around. What was that under the tree? It was one of their tents!

1. John and his two friends went to the forest to ____. [ ]

A. build their camp

B. find their way home

C. enjoy the mountains in the snow

D. watch the trees in the forest

2. They could not find their way back be-cause ____. [ ]

A. there was only one road to their camp

B. they couldn't decide which of the two roads led to their tents

C. there were no roads in the mountains at all

D. everything was covered by the white snow

3. It is clear that they wanted the horses to take them to ____. [ ]

A. John's house

B. the camp

C. the forest

D. the mountains

4. The horses stopped because____. [     ]

A. it was getting late

B. they were tired after running for a long way

C. they knew that they had got to the camp

D. they had seen John's house

5. The story happened ____. [ ]

A. on a cold winter day

B. on a dark snowy evening

C. in a cold camp far from villages

D. at night when nothing could be seen

2012年4月1日，《广州市学校安全管理规定（试行）》开始实施，广州市赋予校车“优先通行；上下学生时，后车不得超越”等多项特权，全力营造安全、良好的校车行车环境。这体现了对未成年人的

A．家庭保护

B．学校保护

C．社会保护

D．司法保护

急性肠胃炎、手足口病分别是由细菌、病毒通过消化道进入人体导致的。因此检验饮用水中细菌、病毒的量是有效监控疾病发生的必要措施。请回答下列与检验饮用水有关的问题：

(1)检验大肠杆菌的含量时，通常将水样进行一系列的梯度稀释，然后将不同稀释度的水样用涂布器分别涂布到琼脂固体培养基的表面进行培养，记录菌落数量，这种方法称为________。上图所示的四种菌落分布中，不可能由该方法得到的是____________。

(2)用该方法统计样本菌落数时是否需要对照组？__________为什么？____________。

(3)有三种材料或用具需要消毒或灭菌：①培养细菌用的培养基与培养皿；②玻璃棒、试管、烧瓶和吸管；③实验操者的双手。其中需要消毒的是_________，需要灭菌的是_________。

(4)已知大肠杆菌能发酵乳糖并产酸、产气，现提供足量的已灭菌的乳糖蛋白胨培养液和具有塞子的试管，应如何判断水样中是否有大肠杆菌？____________________________。

（三）A注册会计师负责审计甲公司20×8年度财务报表。在设计和实施控制测试时，A注册会计师遇到下列事项，请代为做出正确的专业判断。

在确定控制测试的性质时，A注册会计师正确的做法有（）。

A．当拟实施的进一步审计程序以控制测试为主时，应当获取有关控制运行有效性的更高的保证水平

B．根据特定控制的性质选择所需实施审计程序的类型

C．询问本身不足以测试控制运行的有效性，应当与其他审计程序结合使用

D．考虑测试与认定直接相关和间接相关的控制

上海、深圳证券交易所的价格决定采取的方式有（）。

A．随机竞价

B．连续竞价

C．集合竞价

D．协议定价