单选题Which of the following about land diving is true?A It is not dangerous at all.B It was first called “bungee jumping”.C It is a traditional activity in Vanuatu.D It came to Vanuatu from another country.

The earliest immigrants to North America found Indians already living there．The Indians numbered about 500,000 at that time．Their society was a primitive society,but they lived peacefully and welcomed the white strangers to the land．However,these early immigrants from Europe didn't want to share the land with the natives．They killed off many of the Indians,seized their land or pushed them off to lands farther away．Today the Indians,not more than half a million,live in poverty and misery on the land on which they were once masters.
The earliest immigrants were the Spanish,who settled in the southern part of what is now the US．The next large group were the English,after the English came the French,Dutch,Irish,Germans,and other nationality groups,mostly European.
Another early group to arrive were the Negroes．But they were brought in as slaves from Africa．They didn't win freedom till generations later.

According to this passage,which of the following is true?

A.The Negroes came to North America in order to work for the earliest immigrant
B.The Negroes also belonged to the earliest immigrants to the North Americ
C.The Negroes were brought to America by chanc
D.The Negroes didn't win freedom until no

It's too() to do the bungee jumping from the cliff.

A.residential
B.remote
C.risky
D.ridiculous

According to this passage, which of the following is TRUE?___________

A.Company workers started to dress down about twenty years ago
B.Dress-down has become an everyday phenomenon since the early 1990s
C."Dress-down Friday" was first given as a favor from employers
D.Many workers want to wear casual clothes to impress people

Around the world more and more people are taking part in dangerous sports and activities．Of course，there have always been people who have looked for adventure--those who have climbed the highest mountains，explored（探险）unknown parts of the world or sailed in small boats across the greatest oceans．Now，however，there are people who seek（寻找）an immediate thrill（令人激动的事情）from a risky activity which may only last a few minutes or even seconds．
I?would consider bungee（蹦极）jumping to be a good example of such an aetwity．You jump?from a high place（perhaps a bridge or a hot air balloon）200 metres above the ground with an elas-tic（弹性的）rope tied to your ankles．You fall at up to 150 kilometres an hour until the rope stops you from hitting the ground．It is estimated that 2 million people around the world have now tried bungee jumping．Other activities which most people would say are as risky as bungee jumping involve（包括）jumping from tall buildings and diving into the sea from the top of high cliffs．
Why do people take part in such activities as these?Some psychologists（心理学家）suggestthat it is because life in modern societies has become safe and borin9．Not very long ago，people’s lives were constantly under threat．They had to go out and hunt for food，diseases could not easily be cured，and life was a continuous battle for survival．
Nowadays，according to many people，life offers little excitement．They live and work in?comparatively safe environments;they buy food in shops;and there are doctors and hospitals to look?after them if they become ill.The answer for some of these people is to seek danger in activities such?as bungee jumping.

In bungee jumping,you__________.

A.jump as high as you can
B.slide down a rope to the ground
C.attach yourself to a rope and fall to the ground
D.fall towards the ground without a rope