补全短文推荐练习文章：

Mobile phones, “the world’s longest bridge”, tests show women suited for space travel(B/C级)
Looking to the future, Stonehenge, high dive, Agitated sunspot cause trouble, ants as a barometer of ecological change, sleeping giant, robotic highway cones, Einstein named “person of the century”(B/A级)

Passage 1（答案与解析）：
Mind Those Manners on the Subway
 
So, there you are, just sitting there in the subway car, enjoying that book you just bought____________(46) Or, the person sitting next to you takes out a nail clipper (指甲刀) and begins cutting his or her nails.
Annoying? Many of us have to spend some time every day on public transportation_________ (47) So, to make the trip more pleasant, we suggest the following:
Let passengers get off the bus or subway car before you can get on__________ (48)
Stand away from the doors when they are closing
Don't talk loudly on a bus or subway. Chatting loudly with your friends can be annoying to others. ________(49)
Don't think your bags and suitcases (手提箱) deserve a seat of their own.
Use a tissue whenever you cough or sneeze (打喷嚏). An uncovered sneeze can spread germs (细菌), especially in crowded places.
Don't cut your nails or pick your nose on public transportation.
Don't read over other people's shoulder__________(50) It can make people uncomfortable. They might think you're too stingy (小气的) even to buy a newspaper. Or they might think you're judging their behavior
 
A　Don't eat food in your car.
B　Don't shout into your mobile phone on a bus or subway.
C　We all know that some behaviors are simply unacceptable.
D　Many people do this on subways, but it's really annoying
E　Getting off and on in an orderly manner can save time for all.
F　Suddenly, you feel someone leaning over your shoulder reading along with you
1． 分析文章标题： Mind Those Manners on the Subway
2． 分析被选项，关注被选项在句子结构， 时态及用词及语意上的相互关系：
A　Don't eat food in your car.
B　Don't shout into your mobile phone on a bus or subway.
C　We all know that some behaviors are simply unacceptable.
D　Many people do this on subways, but it's really annoying
E　Getting off and on in an orderly manner can save time for all.
F　Suddenly, you feel someone leaning over your shoulder reading along with you

3 直接解题：

A　Don't eat food in your car.
B　Don't shout into your mobile phone on a bus or subway.
C　We all know that some behaviors are simply unacceptable.
D　Many people do this on subways, but it's really annoying
E　Getting off and on in an orderly manner can save time for all.
F　Suddenly, you feel someone leaning over your shoulder reading along with you
So, there you are, just sitting there in the subway car, enjoying that book you just bought__________(46) Or, the person sitting next to you takes out a nail clipper (指甲刀) and begins cutting his or her nails.
答案: 空格前面句子中出现的人称代词是you, 因此首先排除C (we: 上下文中出现的人称代词(we, you)应该是一致的), 并关注F: reading与空格前句中的 book呼应, 因此F是答案.

A　Don't eat food in your car.
B　Don't shout into your mobile phone on a bus or subway.
C　We all know that some behaviors are simply unacceptable.
D　Many people do this on subways, but it's really annoying
E　Getting off and on in an orderly manner can save time for all.
Annoying? Many of us have to spend some time every day on public transportation___________(47) So, to make the trip more pleasant, we suggest the following:
答案: C. (C中的 we与空格前面的 us呼应), C放入空格中与空格后面句意自然承接.

A　Don't eat food in your car.
B　Don't shout into your mobile phone on a bus or subway.
D　Many people do this on subways, but it's really annoying
E　Getting off and on in an orderly manner can save time for all.

Let passengers get off the bus or subway car before you can get on____________(48)
答案: E. 空格前句中的get off the bus or subway car与E中的 getting off and on呼应.