Test Four Niagara is an Indian word which means "roaring water"．Indeed, the roar of falling water of Niagara can be heard 1 a distance of 25 kilometers．Imagine 2of water flowing over a cliff 90 feet high and you will get an idea of that terrible noise．
And 3 tremendous power the Niagara River has! It moves big rocks about and throws them into the boiling water below．
4 ago an old ship without a single person on board was put in mid-stream．It sailed down the river 5 a toy boat with great speed．Having reached the fall, the ship dropped into the boiling water, never 6 again．
There were some people who wanted to become famous 7 swimming across the most dangerous part of the Niagara River．One of them was Captain Webb．8 that he would try to swim across the Niagara drew crowds of people．On the evening of July 21st, 1893, Captain Webb came up to the river and 9 a plunge．His having jumped into the water 10 many people with horror． Soon, he appeared in the middle of the river． A loud shout went up from the crowd, but a moment later there was 11 silence．The man had disappeared under the water．Thousands of eyes 12 on the river, but the man was drowned．
In 1902, a certain Miss Taylor decided to go over the falls in a barrel．There were different kinds of pillows inside the barrel to prevent her 13．Having examined the barrel carefully, Miss Taylor got in． The barrel was closed and then 14 into the water．Having reached the falls, it overturned and was shot down by the terrible 15 of the water．When the barrel was finally caught and opened, Miss Taylor came out alive 16with a frightened look in her eyes．
Once a crowd of visitors saw a rope 17 over them from one bank of the river to the other．Then they saw a man 18the rope．The man was an actor, Blondin 19．He managed to cross Niagara Falls on a tight rope．The people on the bank were surprised at his 20 it so well．
1．A） within B） inside C） at D） on
2．A） Much B） a great number C） mass D） a mass
3．A） how much B） what C） so D） how
4．A） Sometimes B） Many times C） Much time D） Some time
5．A） as B） as if C） like D） likely
6．A） to appear B） appearing C） appeared D） appear
7．A） for B） by C） through D） from
8．A） He said B） His having said C） He says D） He had said
9．A） gave B） made C） did D） took
10．A） filling B） full C） filled D） was filled
11．A） dead B） dying C） died D） death
12．A） being stopped B） were fixing C） were fixed D） fixed
13．A） being hurt B） having hurt C） hurting D） hurt
14．A） being thrown B） throwing C） thrown D） threw
15．A） power B） strength C） force D） capacity
16．A） therefore B） however C） so D） but
17．A） being put B） put C） having put D） putting
18．A） step across B） step out onto C） step along D） step on
19．A） under the name of B） with the name of
C） by name D） to the name of
20．A） done B） having done C） having been done D） being done
Key to Test Four 1．A 2．D 3．B 4．D 5．C 6．A 7．B 8．B 9．D 10．C
11．A 12．C 13．A 14．C 15．C 16．D 17．A 18．B 19．C 20．B
