Almost everyone wants to get smarter. We struggle to improve our 16_ , intelligence and attention. We drink cup after cup of coffee to help us  17_  the day.
 18 __, a new study published in Current Directions in Psychological Science warns that there are 19___ to how smart humans can get.
Each of our body parts develops in a certain way for a reason.  20  _, we are not 3 meters tall  21 _ most people’s hearts are not strong enough to send  22 _  up that high. Scientists say that our thinking ability works in the same way. A baby’s brain size is limited by a series of __23  , such as the size of the mother’s pelvis (骨盆). If our brains developed to be bigger, there could be more  24  during childbirth.
The study of Jews, who have an average IQ much _ 25_  than other Europeans, showed they were more  _26_  to develop diseases of the  _27_  system. This might be because of their increased brainpower.
If intelligence cannot be improved, can we at least get better at _ 28 _ ? Not really, say scientists. They studied  _29_  like caffeine (咖啡因)that improve attention. They found the drugs only helped people with serious  30 _ problems. For those who did not have trouble paying attention, the drugs could have the  31 _ effect. Scientists say that this suggests there is a(n)  32 limit to how much people can or should concentrate.
Our memory is also a “double-edged sword”. People with extremely good memories could  33__ having a difficult life because they cannot  _34 bad things that happen to them.
Thomas Hills, one of the authors of the paper, said that   35  all the problems in trying to get smarter, it’s unlikely that there will ever be a “super mind”.

Almost everyone wants to get smarter. We struggle to improve our 16_ , intelligence and attention. We drink cup after cup of coffee to help us  17_  the day.

 18 __, a new study published in Current Directions in Psychological Science warns that there are 19___ to how smart humans can get.

Each of our body parts develops in a certain way for a reason.  20  _, we are not 3 meters tall  21 _ most people’s hearts are not strong enough to send  22 _  up that high. Scientists say that our thinking ability works in the same way. A baby’s brain size is limited by a series of __23  , such as the size of the mother’s pelvis (骨盆). If our brains developed to be bigger, there could be more  24  during childbirth.

The study of Jews, who have an average IQ much _ 25_  than other Europeans, showed they were more  _26_  to develop diseases of the  _27_  system. This might be because of their increased brainpower.

If intelligence cannot be improved, can we at least get better at _ 28 _ ? Not really, say scientists. They studied  _29_  like caffeine (咖啡因)that improve attention. They found the drugs only helped people with serious  30 _ problems. For those who did not have trouble paying attention, the drugs could have the  31 _ effect. Scientists say that this suggests there is a(n)  32 limit to how much people can or should concentrate.

Our memory is also a “double-edged sword”. People with extremely good memories could  33__ having a difficult life because they cannot  _34 bad things that happen to them.

Thomas Hills, one of the authors of the paper, said that   35  all the problems in trying to get smarter, it’s unlikely that there will ever be a “super mind”.

1.                A．memory        B．character       C．.ability    D．emotion

2.                A．go through      B．get through      C．put through    D．carry through

3.                A．Though         B．Therefore       C．Meanwhile    D．However

4.                A．standards       B．measures       C．ranges   D．limits

5.                A．For example     B．In addition       C．At first   D．Above all

6.                A．until           B．before         C．because  D．so that

7.A. blood      B information        C. breath            D. strength

8.                A．reasons        B．factors         C．aspects   D．effects

9.                A．chances        B．lives           C．choices   D．deaths

10.               A．smarter        B．better          C．higher D．lower

11.               A．likely          B．possible        C．probable  D．sure

12.               A．nervous        B．bodily          C．personal   D．physical

13.               A．exercising      B．concentrating    C．memorizing D．thinking

14.               A．poisons        B．drinks          C．plants     D．drugs

15.               A．health         B．family          C．attention  D．living

16.               A．same          B．different        C．opposite   D．similar

17.               A．lower          B．smaller         C．higher D．upper

18.               A．end up         B．make up        C．start up   D．come up

19.               A．remember      B．forget          C．perform   D．share

20.               A．supposing       B．considering     C．concerning D．regarding

Flying first class was a new experience for us. We were happy to join the other few passengers who  36 fly in such luxury（奢侈）. It was almost as if we had a sense of  37  to be sitting with the group of people that  38 us.
As we chatted away about our travel, I could hear people around us talked about  39 business meetings. It wasn’t long before I __40  that these people were used to flying in luxury. They are 41 people I thought.
We noticed that the stewardess（女乘务员）was working non-stop to ensure the  42 of the first class passengers. She could not walk by a seat without receiving a(n)  43 . I thought how much she must love her job,  44  she smiled kindly at each person while  45 to their needs.
As the stewardess walked by our seats near the  46  of the flight, I looked at her and said, “Thank you and I hope you’ll have a great night.”She stopped at our seats with a look of  47 , bent down, looked at me and said, “Excuse me?” I  48  my words and she smiled in a rather 49 way, almost as if I had asked her a question that she did not know how to answer. After a few moments she said, “I can  50 you work with the public.”“Why do you think so?” I asked. She answered very quietly, “Because you are the _51  passenger here to say thank you and I really 52  your kindess.
The sense of belonging to the elite（精英）group of people in first class  53  as we heard her words. Our seats in luxury offered us  54  a comfortable ride. We were reminded that without 55  we would be flying in no class.

I do a lot of management training each year for the Circle K Company. Among the 21 we discuss in our classes is the 22 of quality employees（雇员）

“What has caused you to stay 23 enough to become a manager?" I asked. After a while a new manager took the 24 and said slowly, "it was a baseball glove.”

Cynthia said she used to 25 a Circle K clerk job as an interim (时临的.) one while she looked for something 26 . On her second day behind the counter, she received a (an) 27 from her nine-year-old son, Jessie. He 28 a baseball glove for the little League. She 29 that as a single mother, money was 30 , and her first check would have to go for paying 31.

When Cynthia arrived for work the next morning, Partircia, the store manager asked her to come to her small office and handed her a box. “I overheard you 32 to your son yesterday,” she said, “and I know that it is 33 to explain things to kids. This is a baseball glove for Jessie. I know you have to pay bills 34 you can buy gloves. You know we can’t 35 good people like you as 36 as we would like to; but we do 37 and I want you to know how 38 you are to us.”

The thoughtfulness, empathy (同情) and love of the store manager show vividly that people 39 more how much a( n) 40 cares than how much he pays.

Almost everyone wants to get smarter. We struggle to improve our  36_ , intelligence and attention. We drink cup after cup of coffee to help us  37_  the day.
 38 __, a new study published in Current Directions in Psychological Science warns that there are 39___ to how smart humans can get.
Each of our body parts develops in a certain way for a reason.  40  _, we are not 3 meters tall  41 _ most people’s hearts are not strong enough to send  42 _  up that high. Scientists say that our thinking ability works in the same way. A baby’s brain size is limited by a series of __43  , such as the size of the mother’s pelvis (骨盆). If our brains developed to be bigger, there could be more  44  during childbirth.
The study of Jews, who have an average IQ much _ 45_  than other Europeans, showed they were more  _46_  to develop diseases of the  _47_  system. This might be because of their increased brainpower.
If intelligence cannot be improved, can we at least get better at _ 48 _ ? Not really, say scientists. They studied  _49_  like caffeine (咖啡因)that improve attention. They found the drugs only helped people with serious  50 _ problems. For those who did not have trouble paying attention, the drugs could have the  51 _ effect. Scientists say that this suggests there is a(n)  52 limit to how much people can or should concentrate.
Our memory is also a “double-edged sword”. People with extremely good memories could  53__ having a difficult life because they cannot  _54 bad things that happen to them.
Thomas Hills, one of the authors of the paper, said that   55  all the problems in trying to get smarter, it’s unlikely that there will ever be a “super mind”.