问题 选择题

人体要完成的每一个动作除了需要运动系统参与外还需要其它系统的协调配合,你在打篮球时,最不需要下列哪个系统的参与?(  )

A.呼吸系统

B.神经系统

C.生殖系统

D.血液循环系统

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.骨骼肌只能收缩牵拉骨而不能将骨推开,因此一个动作的完成总是由两组肌肉相互配合活动,共同完成的.在运动中,神经系统起调节作用,骨起杠杆的作用,关节起支点作用,骨骼肌起动力作用.可见,人体完成一个运动都要有神经系统的调节,有骨、骨骼肌、关节的共同参与,多组肌肉的协调作用,才能完成.运动并不是仅靠运动系统来完成.它需要神经系统的控制和调节.它需要能量的供应,因此还需要消化系统、呼吸系统、循环系统等系统的配合.在打篮球时,最不需要生殖系统的参与.
故选:C

单项选择题

In WAR MADE EASY Norman Solomon demolishes the myth of an independent American press zealously guarding sacred values of free expression. Although strictly focusing on the shameless history of media cheerleading for the principal post World War II American wars, invasions, and interventions, he calls into question the entire concept of the press as some kind of institutional counterforce to government and corporate power.
Many of the examples compiled in this impeccably documented historical review will be familiar to readers who follow the news on the Internet. But such examples achieve fresh impact because of the way Solomon has organized and analyzed them. Each chapter is devoted to a single war hawk argument ("America Is a Fair and Noble Superpower," "Opposing the War Means Siding with the Enemy," "Our Soldiers Are Heroes, Theirs Are Inhuman"), illustrated with historical examples from conflicts in the Dominican Republic, E1 Salvador, Vietnam, Grenada, Panama, Kosovo, both Iraq wars, and others in which the media were almost universally enthusiastic accomplices.
The book should really be subtitled "War reporting doesn’t just suck, it kills. "it makes you feel like demanding a special war crimes tribunal for corporate media executives and owners who joined the roll-up to" shock and awe" as non-uniformed psywar ops. To be sure, this would raise the issue of whether or not following orders might suffice for the defense of obedient slaves such as Mary McGrory and Richard Cohen, who performed above and beyond the call of duty. "He persuaded me, " ncGrory gushed(热情洋溢地表达) the morning after Colin Powell addressed a plenary session of the United Nations on February 5, 2003, declaring that Iraq had weapons of mass destruction. " The cumulative effect was stunning. "In the same Washington Post edition, Cohen wrote.
The evidence he presented to the United Nations—some of it circumstantial, some of it absolutely bone-chilling in its detail—had to prove to anyone that Iraq. not only hasn’t accounted for its weapons of mass destruction but without a doubt still retains them. Only a fool—or possibly a Frenchman—could conclude otherwise.
Solomon demonstrates how this kind of peppy prewar warm up degenerates into drooling and heavy breathing once the killing begins. As if observing a heavy metal computer game, the pornographers of death concentrate on the exquisite craftsmanship and visual design of the murder machines and the magnificence of the fiery explosions they produce.

What is a common misperception of American press

A.It discloses the shocking history of invasions.

B.It concentrates on media support for the wars.

C.It protects freedom of expression without reserve.

D.It stands on the side of the government.

名词解释