手握住一只汽水瓶静止在空中,关于瓶子在竖直方向的受力情况说法正确的是( ) A.

题型:选择题

问题:

手握住一只汽水瓶静止在空中,关于瓶子在竖直方向的受力情况说法正确的是(  )

A.受重力和握力

B.受重力和摩擦力

C.重力等于握力

D.重力等于摩擦力

考点:二力平衡的定义及条件
题型:选择题

患儿,7岁。两足趾、足背皮肤有10余枚隆起赘生物,小者如粟米,大者如黄豆,状如花蕊,表面蓬松枯槁,搔破后易出血。其诊断是

A.传染性软疣
B.寻常疣
C.掌跖疣
D.丝状疣
E.扁平疣

题型:选择题

汽车运输行车路单实行()。

A、批量货物一单制

B、一队一单制

C、一车一单制

D、队车一单制

题型:选择题

E

Should struggling students be banned from clubs and sports?

Getting a bad grade in Rockingham, Vt. could get you kicked off the team! School officials there are considering new guidelines that would prevent students with bad grades from participating in extracurricular activities, such as sports and clubs. The proposal would affect students in eighth grade and below.

School board member Mike says the policy would motivate students to work harder in school. He drafted a letter to coaches, parents, and after-school program leaders to encourage them to allow only kids who are meeting certain academic standards into their program.

Not everyone gives such policy an A+. Some people argue that no student should be excluded from after-school activities. They say taking part in extracurricular activities can help kids do better in class by improving their participation and concentration skills. They say a 2009 study from the Centers for Disease Control and Prevention found that time spent in extracurricular physical activities does not take away from students’ ability to do well in the classroom . In fact, it may even help boost girls’ academic performance.

Students themselves have different opinions.

SCHOOL COMES FIRST

Why not require good grades to participate in those activities?

Kids need to understand that grades are important. School comes first, period. Getting good grades help you with life, help you go to college, get a job, and so on. Banning underachieving students from extracurricular activities not only gives them motivation to get their grades up, but allows more time to study or get help from a tutor.

DON’T BAN STUDENTS

Every student should be able to participate in extracurricular activities, no matter what his or her grades are. Extracurricular activities can help kids concentrate more on doing homework. They can help kids develop mentally and physically.

A school policy that tells kids with bad grades that they can’t be in sports or the school play is like judging a book by its cover. Every student is unique. A kid may have a learning disability, an attention issue, or a difficult time studying in his or her home environment. His or her teachers should find why the student is struggling. Together they should find out a solution that will keep the student in the activity.

72. Which of the following is the closest in meaning to the underlined word “excluded”?

A. protected       B. approved      C. blamed      D. banned

73. What’s the author’s attitude to the policy that prevents students with bad grades from participating in extracurricular activities?

A. supportive       B. critical        C . neutral      D. indifferent

74. In the second paragraph “a 2009 study…”is used by the critics to_______ .

A. To indicate the author is against the policy.

B. To emphasize there is no need to ban the students with bad grades to take part in extracurricular activities.

C. To suggest girls can benefit from extracurricular activities.

D. To prove grades have nothing to do with extracurricular activities.

75. Some don’t think the policy is reasonable for the following reasons EXCEPT______.

A. Every kid is unique.

B. Extracurricular activities will benefit students mentally and physically.

C. Grades will help students get a job.

D. One can learn more that can’t be learned in class.

题型:选择题

波特认为有五种力量决定整个市场或其中任何一个细分市场的长期的内在吸引力,这五种力量不包括( )。

A.同行业竞争者

B.政策制定者

C.潜在的新加入的竞争者

D.替代产品

题型:选择题

根据《海上交通安全法》的规定,中远系统悬挂方便旗的船舶从国外港口先后抵、离上海港和天津港,并从天津港出境,其在上述两港应办理的进、出港手续分别为()。

A.检查、检查/签证、检查

B.检查、签证/签证、检查

C.检查、检查/检查、检查

D.检查、签证/检查、检查

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