光电比色计的电源是：（）。 A.钨丝灯 B.低压氢灯 C.碘钨灯 D.氦灯

Let’s say you took violin lessons all through elementary school, but you haven’t got the instrument out of its case for years. Were all those lessons a waste of your parents’ money because you didn’t become a violinist?

Even though it has been a long time since you played the violin, a new study shows that as little as one year of music training can have a positive impact (影响) on your brain that will last the rest of your life.

In an experiment, researchers compared children who had taken music lessons to those who hadn’t. Laurel Trainor, who studies music and the mind, discovered that the musically-trained children had better brain responses in certain sound recognition exams. Trainor’s findings show the possibility that musical education can actually improve the brain’s hearing cortex(大脑皮层). “The study’s results show that music training affects attention and memory, and helps children develop learning skills. In this way music training might lead to better learning across a number of fields,” Trainor said in a statement. The effects of music education are even more obvious on children with difficulty in reading and writing and other language-related disabilities.

So, whether you can play a good piece of music or not, it’s likely that your years of music lessons have prepared your brain for all the speeches, emails, and adult conversations that are part of your life today. We should help make sure that children today have the same opportunities for music, and help out by volunteering with or donating instruments to your school’s music education department.

小题1:Compared with children who haven’t taken music lessons, musically-trained children _______.

A．sing better

B．do better in exams

C．recognize sounds better

D．response more quickly小题2:According to the study, we know musical education can _____.

A．change the structure of the brain

B．improve children’s learning skills

C．help children focus their attention

D．provide more memorizing methods小题3:What can we learn from the text?

A．Adults should also take some music lessons.

B．The author has taken violin lessons when he was young.

C．Even a day’s music training can affect the human brain.

D．Music training can also help children with certain disabilities.

Ⅱ型肺结核可能显示的是（）

A.双肺纹理明显增多

B.双肺广泛云雾状的片状影

C.双侧肺门影明显扩大伴肿大的淋巴结块影

D.双肺广泛的干酪样病变，部分病变处有细小空洞形式

E.双肺有广泛分布密度大小一致结节状影

下边图示最有可能出现在我国( )

A．中华人民共和国建国初期

B．社会主义十年探索时期

C．十年" * * "时期

D．改革开放新时期

被尊为“花间派”鼻祖的词人是( )。

A．温庭筠
B．韦庄
C．李煜
D．柳永