[单选题]封闭型断层，由于两盘相互挤压，其本身的透气性差，割断了煤层与-我要搜题网

[单项选择]目前常使用（）满足长期出差人员浏览井场实时信息的随时、随地要求，解决了用户浏览信息的时空限制。
A. 微机
B. 手机
C. PDA
D. 电视

[单项选择]吉兰-巴雷综合征患者病后5天出现严重面神经麻痹、吞咽困难，严重呼吸肌麻痹、构音含糊。首选的治疗是（）
A. 鼻饲流质
B. 大量维生素B
C. 抗生素治疗
D. 应用肾上腺糖皮质激素
E. 气管切开并用呼吸机

[不定项选择题]共用题干第三篇

Smart Exercise

Doctors are starting to find more and more information that suggests a connection
between exercise and brain development.Judy Cameron,a scientist at Oregon Health and
Science University,studies brain development.According to her research,it seems that
exercise can make blood vessels,including those in the brain,stronger and more fully
developed.Dr. Cameron claims this allows people who exercise to concentrate better. As
she says:"While we already know that exercise is good for the heart,exercise can literally
cause physical changes in the brain."
The effects of exercise on brain development can even be seen in babies.Babies who
do activities that require a lot of movement and physical activity show greater brain
development than babies who are less physically active.With babies,even a{ittle
movement can show big results. Margaret Barnes , a pediatrician（儿科医师）,believes in
the importance of exercise.She thinks that many learning disabilities that children have in
elementary school or high school can be traced back to a lack of movement as babies.
"Babies need movement that stimulates their five senses.They need to establish a
connection between motion and memory.In this way,as they get older,children will begin
to associate physical activity with higher learning,"says Margaret.
Older people can beef up their brains as well.Cornell University studied a group of
seniors ranging in age from seventy to seventy-nine. Their study showed a short-term
memory increase of up to 40 percent after exercising just three hours a week.The exercise
does not have to be very difficult,but it does have to increase the heart rate.Also,just like
the motion for infants,exercise for older people should involve some complexity.Learning
some new skills or motions helps to open up memory paths in the brain that may not have
been used for a long time.
For most people,any type of physical activity that increases the heart rate is helpful.
The main goal is to increase the brain's flow of blood.And your brain can benefit from as
little as two to three hours of exercise a week. The title of the passage implies that
A.only smart people do exercise.
B.exercise can be smart or stupid.
C.exercise keeps the brain strong.
D.it is fashionable to do exercise.

[单选题]封闭型断层，由于两盘相互挤压，其本身的透气性差，割断了煤层与地表的联系，从而使煤层瓦斯含量较高，瓦斯压力增加，则其瓦斯涌出量( )。A.A、增大B.B、减少C.C、不变

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[单选题]封闭型断层，由于两盘相互挤压，其本身的透气性差，割断了煤层与地表的联系，从而使煤层瓦斯含量较高，瓦斯压力增加，则其瓦斯涌出量( )。
A.A、增大
B.B、减少
C.C、不变