问题 选择题

下列关于骨骼肌的叙述错误的是(  )

A.每块骨骼肌都至少跨越一个关节

B.两端的肌腱分别固着在同一块骨上

C.每块骨骼肌都包括肌腹和肌腱两部分

D.两端的肌腱分别固着在不同的骨上

答案

骨骼肌由肌腱和肌腹两部分组成,同一块骨骼肌的两端跨过关节分别固定在两块不同的骨上.骨骼肌有受刺激收缩的特性,骨骼肌收缩,牵动着它所附着的骨,绕着关节活动,于是躯体就产生了运动.如下图,一块骨骼肌分别附着在不同的骨上才能牵引所附着的骨,绕关节完成运动.如果一块骨骼肌附着在同一块骨上的话,那么骨骼肌收缩,只会导致骨的弯曲,这在人的运动中是不存在这样现象的.

综上分析,骨骼肌两端的肌腱分别固定在同一块骨的两端说法是不正确的.

故选:B

单项选择题
完形填空

III.完形填空(共30分)

Allen Su’s life has always been a bit different from his peers (同龄人)—(快乐男生:苏醒)

He __21___8.5 in the IELTS (雅思) and then spent seven years in Australia . But since he entered the Super Boy (快乐男生) __22___show earlier last year ,his life has__23___ dramatically.

Allen was born in a well-off family in Xi’an Shanxi Province. He was a __24___student when he was at school and always got good marks. “My marks are getting lower and lower__25___ I am getting older and older,” Allen __26___in an interview.

Around a year ago, Allen came from Sydney and entered Super Boys, __27___ he finished second. Even though he did not come first, he won the__28___ of thousands of fans with his sunny appearance, life experience and humorous,   __29 _ English.

Allen always tries to do everything as well as he can.  __30___ Super Boys, he has improved his skills and become a more   __31___and better singer. Not only is he a good singer, Allen is now __32___ a host. He was the host of the Soccer Prince On Hunan Satellite TV in August.

Recently Allen   __33__in a stage play called A Mid-summer Night’s Dream, which was written by William Shakespeare. Acting is __34__ to Allen, but __35__ he is hard -working and modest (谦虚)enough to learn __36__ to do it .His new play appeared __37_stage in Beijing On November 2.

It is believed that Allen will have great __38__ in the future, because he is a brilliant and thoughtful person, just as he wrote in his __39__ which you can see on the Internet, “We smile, we cry, because we have __40__in our life.  

21.A.accepted      B.ranked      C.scored         D.dropped

22.A.talk          B.talent     C.picture         D.action

23.A.moved         B.started      C.touched       D.changed

24.A.top           B.sleepy       C.kind         D.cruel

25.A.as            B.before      C.since         D.because

26.A.replied        B.joked     C.explained      D.asked

27.A.which          B.when     C.where          D.that

28.A.cheers         B.belief          C.view         D.hearts

29.A.well-written     B.well-said   C.well-spoken     D.well-done

30.A.By           B.With     C.In            D.Through

31.A.experienced     B.interested  C.friendly       D.nice

32.A.even         B.yet       C.still          D.also

33.A.recognized       B.appeared   C.turned         D.recalled

34.A.new         B.kind     C.loyal         D.normal

35.A.luckily        B.really     C.madly          D.excitedly

36.A.what         B.why     C.how         D.which

37.A.at             B.on       C.in            D.to

38.A.success        B.faith     C.chance         D.progress

39.A.letter        B.book     C.game         D.blog

40.A.hopes          B.dreams   C.ideas         D.sweets