肠外营养最严重的穿刺技术性并发症是（）。 A.气胸 B.纵隔血肿 C.空气栓塞 D.

甲立有遗嘱，其内容为自己死后遗产全部由独生子乙继承。在一次车祸中甲乙同时遇难，甲当场死亡，乙在送往医院的途中死亡。乙的儿子丙依甲的遗嘱继承了甲的全部遗产。丙继承甲遗产的方式是（）。

A．代位继承

B．转继承

C．第一顺序法定继承

D．第二顺序法定继承

身边一些物质的pH如下，其中显酸性的是（　　）

A．酱油的pH约为4～5

B．牙膏的pH约为8～9

C．肥皂的pH约为10

D．厨房清洁剂的pH约为12～13

C

Geniuses amaze us, impress us and make us all a little jealous．How do they differ from the average person? Scientists are working hard to figure out that answer．Tune in to the National Geographic Channel to find out about the discoveries they’re making in the series My Brilliant Brain.

When Marc Yu was only two years old, he began to play the piano．After a year, he started learning pieces by Beethoven．Now he’s a world-famous concert pianist at age eight．He learns newer and more difficult pieces with ease and can identify any note he hears．He seems to be specially designed for music．In Born Genius, National Geographic looks at the science behind child prodigies (神童) to explain why some children seem to be born without limits.

Genius didn’t come naturally to Tommy McHugh．His came only after he nearly died from bleeding in his brain．After recovering, McHugh’s head was filled with new thoughts and pictures．So, he began to express them in the form of poetry and art．Now, he’s a seemingly unstoppable creative machine．Sufferers of autism and brain injury have shown that great mental ability can sometimes come from damage or disease．Accidental Genius explores this puzzling relationship.

Can normal people be trained to be geniuses? Susan Polger has shown no signs of extraordinary intelligence．Yet, during her childhood, she studied thousands of chess patterns and learned to recognize them immediately．As a result, she was able to beat skilled adult players by age 10 and can now play up to five games at the same time without even seeing the boards．Make Me a Genius examines what it takes to turn an ordinary brain into that of a genius.

If becoming a genius were easy, we’d all be one．Yet, there is much more to super intelligence than simply being born lucky．Learn more about amazing brains this month on National Geographic’s My Brilliant Brain.

51．My Brilliant Brains is most probably from _______.

A．a website           B．the radio               C．a magazine          D．a newspaper

52．The author takes Marc Yu as an example to show that a child prodigy is        .

A．a person who learns something easily

B．a child who is eager to learn new things

C．a student who practices an instrument a lot

D．a kid who works hard to do well in school

53．Which of the following is NOT true according to the passage?

A．New things about the brain are still being discovered.

B．People without natural abilities can learn to do things well.

C．Some people naturally have more active brains.

D．People are usually smarter when they recover from brain injury.

54．From the passage, we know that ___________

A．scientists completely understand the brain

B．people can only be born as geniuses

C．there’s no such thing as a true genius

D．there are many factors in being a genius

55．The author develops the passage mainly by ___________.

A．providing typical examples

B．following the natural time order

C．presenting a cause and analyzing its effects

D．comparing opinions from different scientists

可致肺纤维病变的是（）

A.利多卡因

B.心痛定

C.胺碘酮

D.心得安

E.异丙肾上腺素

数字证书的绑定，个人网上银行客户允许绑定（）个USBKEY。

A.1

B.2

C.3