问题 选择题

下列现象不属于生命现象的是(  )。

A.人通过呼吸排出一些多余的气体

B.春天的秧苗随风而长

C.小狗受到惊吓马上跑掉

D.黄河之水奔流不息

答案

答案:D

题目分析:生物具以下基本特征:①除病毒以外,生物一般都是由细胞构成的;②生物能够进行新陈代谢;③生物能够生长发育;④生物能繁殖后代;⑤生物能对外界的刺激做出反应;⑥生物具有遗传和变异的特性;⑦生物一般能适应一定的环境,也能影响环境。黄河之水奔流不息不属于生命现象。

单项选择题 A1/A2型题
填空题

Exercising to music pumps up brain power


If music makes you smarter, and exercise helps brain function, can exercising to music really boost brainpower Some researchers said it can. Volunteers who listened to Vivaldi’s "Four Seasons" while working out on a treadmill did much better on a test of (1) ability than when they exercised without music, a team (2) Ohio State University found.
"Evidence suggests that exercise improves the (3) performance of people with coronary artery (4) ," said psychologist Charles Emery, who led the study.
"And listening to music is (5) to enhance brainpower. We wanted to put the two results together," Emery (6) in a statement.
Writing in the latest issue of the journal Heart & Lung, Emery and (7) said they studied 33 men and women taking (8) in a cardiac rehabilitation program after having bypass (9) , angioplasty or other procedures to treat clogged arteries.
The (10) said they felt better emotionally and mentally after working out (11) or without the music. But their improvement on the (12) fluency test doubled after listening to music on the treadmills.
"Exercise seems to (13) positive changes in the nervous system, and these changes may have a (14) effect on cognitive ability," Emery said.
"Listening to music may (15) cognitive function through different pathways in the brain. The combination of music (16) exercise may stimulate and increase cognitive arousal (17) helping to organize cognitive output."
Emery said he now wanted to (18) people using music of their own choice. "We used the ’Four Seasons’ because of its (19) tempo and positive effects on medical patients in previous (20) ," Emery said. "But given the range of music preferences among patients, it’s especially important to evaluate the influence of other types of music on cognitive outcomes.\