热继电器作为缺相保护装置时，其发热元件至少需要（）个。 A.1 B.2 C.3 D.

选择工程承包合同方式包括( )。

A．承包商义务范围选择

B．支付方式选择

C．项目组织方式选择

D．投资人满意程度选择

E．管理人员管理范围选择

Learning to play a musical instrument can change your brain, with a US review finding musical training can lead to improved speech and foreign language skills.

Although it was suggested in the past that listening to Mozart’s music or other classical music could make you smarter, there has been little evidence to show that music can boost(使增长) brain power.

But a data-driven review by Northwestern University has pulled reaserch together that links musical training to learning that spills over into (波及) skills including language, speech, memory, attention and even vocal emotion.

Researcher Nina Kraus said the data strongly suggested that the nervous connections made during musical training also prepared the brain for other aspects of human communication.

“ The effect of musical training suggests that, like physical exercise and its effect on body fitness, music is a resource that tones the brain for auditory fitness and thus requires society to re-examine the role of music in shaping individual development, ” the researchers said in their study.

Kraus said learning musical sounds could improve the brain’s ability to adapt and change and also enable the nervous system to provide constructing patterns that are important to learning.

The study, published in Nature Review Neuroscience , looked at the explosion of research in recent years focusing on the effect of musical training on the nervous system which could have impacts for education.

The study found that playing an instrument prepares the brain to choose what is related in a complex process that may involve reading or remembering a score, timing issues and coordination with other musicians.

小题1:What is the text mainly about ?

A．The effect of physical exercise.

B．The researcher named Kraus.

C．The benefit of musical training.

D．Musicians’ improved skills.小题2:The underlined word “ auditory ” in Paragraph 5 probably means “ __________”.

A．of the body

B．connected with seeing

C．of the mind

D．connected with hearing小题3:It was believed but not proved that listening to classical music could __________.

A．add to your intelligence

B．improve your speech

C．boost your memory

D．make you think faster小题4:According to Kraus, musical training contributes to the following EXCEPT __________.

A．body fitness

B．the way to speak

C．langugage learning

D．mental concentration

子宫内膜癌常见的转移途径有()。

A．淋巴转移

B．腹膜种植

C．血行转移

D．腹腔种植

E．直接蔓延

利用EDFA延长SDH系统中继距离时，为消除EDFA的自发辐射噪声积累可采用哪些方法（）。

A、提高光发射功率

B、提高光接收灵敏度

C、在线路的适当处加入光—电—光中继器

D、使用G.655非零色散位移单模光纤

半阴半阳证肿疡可用（）

A.玉露膏

B.疯油膏

C.冲和膏

D.生肌白玉膏

E.生肌玉红膏