关于托福TPO18阅读拍的一道题!Paragraph 4:The empiricalevidence,such as it is,suggests an altogether different function foryawning—namely,that yawning prepares us for a change in activity level.Support for this theory came from a study of

关于托福TPO18阅读拍的一道题!Paragraph 4:The empiricalevidence,such as it is,suggests an altogether different function foryawning—namely,that yawning prepares us for a change in activity level.Support for this theory came from a study of
关于托福TPO18阅读拍的一道题!
Paragraph 4:
The empirical
evidence,such as it is,suggests an altogether different function for
yawning—namely,that yawning prepares us for a change in activity level.
Support for this theory came from a study of yawning behavior in everyday life.
Volunteers wore wrist-mounted devices that automatically recorded their
physical activity for up to two weeks:the volunteers also recorded their yawns
by pressing a button on the device each time they yawned.The data showed that
yawning tended to occur about 15 minutes before a period of increased
behavioral activity.Yawning bore no relationship to sleep patterns,however.
This accords with anecdotal evidence that people often yawn in situations where
they are neither tired nor bored,but are preparing for impending mental and
physical activity.Such yawning is often referred to as
"incongruous" because it seems out of place,at least on the
tiredness view:soldiers yawning before combat,musicians yawning before
performing,and athletes yawning before competing.Their yawning seems
to have nothing to do with sleepiness or boredom—quite the reverse—but it does
precede a change in activity level.
11.The study of
yawning behavior discussed in paragraph 4 supports which of the following
conclusions?(1)
○ Yawning is associated with an expectation of increased physical
activity.
○ Yawning
occurs more frequently when people are asked to record their yawning.
○ People
tend to yawn about fifteen minutes before they become tired or bored.
○ Mental or
physical stress tends to make people yawn.
为什么选A,而不选D?原文中出现了“but are preparing for impending mental and physical activity.”,而且A中说是increased ,而原文只是说change in activity level.

关于托福TPO18阅读拍的一道题!Paragraph 4:The empiricalevidence,such as it is,suggests an altogether different function foryawning—namely,that yawning prepares us for a change in activity level.Support for this theory came from a study of
看这句“
The data showed that
yawning tended to occur about 15 minutes before a period of increased
behavioral activity.“
答案显而易见了~
还有
Mental or physical stress和activity可不一样 D不准确