控制好氧发酵的溶氧浓度一定小于微生物的临界溶氧值。

6个面都是正方形，围成的物体一定是正方体．______．

下图为黄河中下游位于第二亚欧大陆桥附近的某城市平面图，该城市人口在40万以上。读图回答下列问题。

（1）为了适应城市发展的需要，A、B、C三地选择        地建大型飞机场合适，理由是                                         。

（2）E、F、H三地选择   地建高科技工业区合适，理由是             。

（3）图中①一⑨工业基地有一处布局明显不合理，图中数码代号是     理由是                                 

                              。

（4）中国加人WT0后，该城市抓住发展机遇，大力调整产业结构，该市原有工业部门中应加快发展             ，理由是                                        。

.

第二部分：阅读理解（共两节，满分50分）

第一节（共20小题，每小题2分，满分40分）阅读下列短文，从每题所给的四个选项A、B、C、D中选出最佳选项。

Judging from recent surveys, most experts in sleep behaviour agree that there is virtually an epidemic （流行病）of sleepiness in the nation. “I can’t think of a single study that hasn’t found Americans getting less sleep than they ought to,” says Dr. David. Even people who think they are sleeping enough would probably be better off with more rest.

The beginning of our sleep-deficit crises can be traced back to the invention of the light bulb a century ago. From diary entries and our personal accounts from the 18th and 19th centuries, sleep scientists have reached the conclusion that the average person used to sleep about 9. 5 hours a night. “The best sleep habits once were forced on us, when we had nothing to do in the evening down on the farm, and it was dark.” By the 1950s and 1960s, the sleep schedule had been reduced dramatically, to between 7. 5 and 8 hours, and most people had to wake to an alarm clock. “People cheat in their sleep, and they don’t even realize they’re doing it,” says Dr. David. “They think they’re okey because they can get by on 6. 5 hours, when they really need 7. 5, 8 or even more to feel ideally energetic. ”

Perhaps the most merciless robber of sleep, researches say, is the complexity of the day. Whenever pressures from work, family, friends and community increase, many people consider sleep the least expensive item on their programme. “In our society, you’re considered dynamic if you say you need only 5. 5 hours’ sleep. If you’ve got to get 8. 5 hours, people think you lack drive and ambition. ”

To determine the consequences of sleep-deficit, researchers have put subjects through a set of psychological and performance tests requiting them, for instance, to add columns of numbers or recall a passage read to them only minutes earlier. “We’ve found that if you’re in sleep deficit, performance suffers,” says Dr. David. “Short-term memory is weakened, as are abilities to make decisions and to concentrate. ”

41. What is the main topic of the passage?

A. Research on the causes and consequences of sleep-deficit.

B. The epidemic of sleepiness in the modern times.

C. The history of people’s sleeping patterns.

D. The minimum of our sleeping hours.

42. Which of the following is Dr. David’s opinion?

A. People who think they are sleeping enough are better off than those who don't.

B. Some people can remain energetic with only 6. 5 hours’ sleep a night.

C. If they get 8. 5 hours’ sleep, people will be full of drive and ambition.

D. People’s metal power suffers if they are lacking in sleep.

43. People in the 18th and 19th centuries slept about 9. 5 hours a night because _______.

A. they were forced by their parents to do so

B. they knew what was best for their health

C. they had no electricity

D. they were not so dynamic and ambitious as modern people are

44. What does the word “subjects” in paragraph 4 mean?

A. Persons or things being discussed or described.

B. Branches of knowledge studied in a school.

C. Persons or things being treated in a certain way or being experimented on.

D. Any member of a state apart from the the supreme ruler.

肾脏损伤漏诊的最主要原因是()

A．无肉眼血尿症状

B．合并其他内脏损伤

C．血液溢向肾外

D．尿液外溢至肾周

E．合并感染

数据库系统由数据库、 (49) 和硬件等组成，数据库系统是在 (50) 的基础上发展起来的。

数据库系统由于能减少数据冗余，提高数据独立性，并集中检查 (51) ，由此获得广泛的应用。数据库提供给用户的接口是 (52) ，它具有数据定义、数据操作和数据检查功能，可独立使用，也可以嵌入宿主语言使用。 (53) 语言已被国际标准化组织采纳为标准的关系数据语言。

（51）处填（）。

A．数据完整性

B．数据层次性

C．数据的操作性

D．数据兼容性