George entered the box and picked up one of the directories inside, ______ that someone unknown had torn out the very page he needed
A:only to discover B:discovered C:to discover D:only discovering
? ?下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。
| ? ?
No Jetlag(时差反应) Anymore
?
?Most people who travel long distances complain of jetlag(时差反应). Jetlag
makes business travelers less productive (对产的，有成效的) and more prone {{U}}?(51)
?{{/U}} making mistakes. It is actually caused by {{U}}?(52) ?{{/U}} of
your "body clock"-a small cluster(串、组、群)of brain cells that controls the timing
of biological {{U}}?(53) ?{{/U}}. The body clock is designed for a regular
rhythm(节奏)of daylight and darkness, so that it is thrown out of balance when it
experiences daylight and darkness at the "wrong" times in a new time zone. The
{{U}}?(54) ?{{/U}} of jetlag often persist(持续) for days {{U}}?(55)
?{{/U}} the internal body clock slowly adjusts to the new time
zone.
? ?Now a new anti-jetlag system is available that is based on
proven, {{U}}?(56) ?{{/U}} and pioneering scientific research. Dr. Martin
Moore has devised a practical strategy to adjust the body clock much sooner to
the new time zone {{U}}?(57) ?{{/U}} controlled exposure to bright light.
The time zone shift(转换) is easy to accomplish and eliminates (消除) {{U}}?(58)
?{{/U}} of the discomfort of jetlag.
? ?A successful time zone
shift depends on knowing the exact times to either {{U}}?(59) ?{{/U}} or
avoid bright light. Exposure to light at the wrong time can actually make jetlag
worse. The proper schedule {{U}}?(60) ?{{/U}} light exposure depends a
great deal on {{U}}?(61) ?{{/U}} travel plans.
? ?Data on a
specific flight itinerary (旅行路线) and the individual’s sleep {{U}}?(62)
?{{/U}} are used to produce a trip guide with {{U}}?(63) ?{{/U}} on
exactly when to be exposed to bright light.
? ?When the trip guide
calls {{U}}?(64) ?{{/U}} bright light you should spend time outdoors if
possible. If it is dark outside, or the weather is bad, {{U}}?(65) ?{{/U}}
you are on an air plane, you can use a special light device to provide the
necessary light stimulus(刺激) for a range of activities such as reading, watching
TV or working. |
A:directories B:instructions C:specifications D:commentaries
（） systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and （） on the disk, and controlling peripheral devices such as disk drives and printers.
keeping track of files and （） on the disk.
A:contents B:directories C:directions D:direct
WebSQL is a SQL-like (76) language for extracting information from the web. Its capabilities for performing navigation of web (77) make it a useful tool for automating several web-related tasks that require the systematic processing of either ail the finks in a (78) , all the pages that can be reached from a given URL through (79) that match a pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common (80) Interface.
A:paths B:chips C:tools D:directories
(74) systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and (75) on the disk, and controlling peripheral devices such as disk drives and printers.
A:contents B:directories C:directions D:direct
WebSQL is a SQL-like (26) language for extracting information from the web. Its capabilities for performing navigation of web (27) make it a useful tool for automating several web-related tasks that require the systematic processing of either ail the links in a (28) , all the pages that can be reached from a given URL through (29) that match a’ pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common (30) Interface.
A:paths B:chips C:tools D:directories
WebSQL is a SQL-like （1） language for extracting information from the web. Its capabilities for performing navigation of web （2） make it a useful tool for automating several web-related tasks that require the systematic processing of either all the links in a（3） , all the pages that can be reached from a given URL through （4） that match a pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common （5） Interface.
（4）处填（）。
A:paths B:chips C:tools D:directories
NetWare文件系统结构的基本构件块是( )。
A:Volumes B:Directories C:Files D:Databases
单选题
