单选题The iMOVE database is intended for persons who _____.A seek a job as a language translatorB are interested in the German languageC want to be employed by German companiesD wish to work for professional training providers

正确答案：A
文章主旨题。文章分别讨论了在男生和女生中流行的兼职工作，因此A项正确，其余各项均与文章主题无关。
参考译文：
打零工在美国大学生中非常盛行，但是其实许多学生高中起就开始打工了。除了在快餐店打工，另一个在青少年中很流行的工作是临时保姆。这项工作尤其适合女孩，一个可靠、负责和成熟的临时保姆可以挣到不少钱。
而这项工作不一定是份轻松的活儿，它需要社交技巧和综合能力。一个好的临时保姆要会换尿布，还得赢得她照看的孩子的尊重，她得哄孩子上床，即使孩子睡着了也不能掉以轻心。此外，她得知道如何运用常识处理突发状况并且随时保持冷静。她还得在需要协助的情况下知道医院和警方的紧急联系方式。
一旦孩子睡着了，临时保姆就可以看电视或者听音牙。如果真的在乎学业，还可以将这些时间用于做功课。但是不能煲电话粥，因为家长在这期间可能会与她联系。
另一个在男孩中流行的工作是送报纸，这项工作同样需要成熟、稳重与责任感。它可以为高中生带来不错的收入。从事这项工作必须很早起床并且风雨无阻地将报纸送到每家每户，没有假日，也没有例外。

参考答案：A, D

正确答案：A

答案：C

解析：

正确答案：A

参考答案：B

正确答案：A
解析：Explanation: The current activity window in SQL Server Enterprise Manager can be used to perform. ad hoc monitoring of an instance of SQL Server. This allows for the quick analysis of the volume and general types of activity on the system and can indicate current blocked and blocking transactions, currently connected users on an instance of SQL Server and the last statement executed and locks that are in effect on the database.

In the screen shot of current activity window the icon, labeled spid 51, indicates that a database lock is in place; the second icon, labeled spid 52, can be used to identify the process that is blocking one or more connections; and the third icon, labeled spid 53, can be used to identify the process that is being blocked by another connection

Incorrect Answers:
B: The system stored procedure sp_lock can be used to return a result set that contains information about resources that are locked and the sp_who stored procedure provides information about current SQL Server 2000 users and processes. The information returned by the sp_who procedure can be filtered to return only current non-idle processes. This makes it possible to identify which resources are being locked and which processes are responsible for creating those locks. These stored procedures require more resources and more administrative effort than the Current Activity window. It is therefore not the best answer.

C: The SQL profiler is not the best tool to immediately solve the locking problem. It could be used at a later moment if a long-term solution to the problem is required. SQL profiler would require more system resources and might impact normal database activities.

Note: SQL Profiler is a graphical tool that allows system administrators to monitor events in an instance of SQL Server. Data pertaining to an event can be captured and saved to a file or SQL Server table to be analyzed at a later date. It can be is used to step through problem queries to find the cause of the problem; to find and diagnose slow-running queries; to capture the series of SQL statements that led to a problem; and to monitor the performance of SQL Server to tune workloads.

D: SQL Server provides objects and counters that can be used by System Monitor in a Windows 2000 or by Performance Monitor in Windows NT 4.0 to monitor the system performance of computers running an instance of SQL Server. However, these counters are used for statistics and alerts and they cannot, in a direct way, be used to track down the cause of the locking problem.

正确答案：C

正确答案：B

答案：B

解析：