下列开始有了真正的根的植物类群是( ) A.藻类植物 B.苔藓植物 C.蕨类植物

题型:选择题

问题:

下列开始有了真正的根的植物类群是(  )

A.藻类植物

B.苔藓植物

C.蕨类植物

D.裸子植物

考点:藻类,苔藓,蕨类植物的生活环境种子植物的结构和功能
题型:选择题

患儿,女性,11岁,口腔卫生差,双侧上下颌乳磨牙面广泛浅龋,松(-),叩(-)

该患儿最佳治疗手段为 ()

A.树脂充填治疗

B.观察,暂不处理

C.药物治疗

D.窝沟封闭

E.釉质成形术

题型:选择题

发行人申请在创业板上市,公司股东人数应不少于()。

A.50人

B.100人

C.200人

D.300人

题型:选择题

病例对照研究资料归纳表:

病例对照研究资料整理如上,其比值比的表达式为()。

A.ad/bc

B.ab/cd

C.b/c

D.c/d

E.(a/n1)/(c/n0)

题型:选择题

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.\

题型:选择题

生殖健康咨询效果评估,选择对象时应考虑其文化水平、性别结构、职业结构、学习时间、学习环境,这些因素会直接影响()指标的实现。

A、60%

B、70%

C、80%

D、85%

更多题库