A. A; the       
B. The; the        
C. A; a        
D. The; a

A. cares for    
B. allows for      
C. applies for        
D. calls for

A. all that
B. all what
C. all which
D. that all

A. anxiety    
B. relief    
C. view    
D. judgment

     Robert performs his 24-foot boat past willow(柳树) young trees that stick out of the waters of the
Mississippi River. __1__ dances off maples(枫树), their branches heavy with __2__ spring leaves. But a
 _3__ inspection discloses trouble behind the beautiful sight. Rubbish is __4__ in a logjam(浮木阻塞) and hangs from the tree's branches.
     For the next three hours Robert and his team pull plastic bags, tanks, bottles and __5__ bowling pins
out of the water. Then they __6__ for a picnic table caught in the trees. Welcome to the Mississippi River
Beautification Project begun in 1997 with Robert's one man __7__  to pick up rubbish __8__ a 400 mile
stretch(伸展) of the 2,340 mile river. That year, often working __9__, the 22-year-old fellow cleaned 150 miles of shoreline.
     At first the project appeared__10__ and useless. But Robert tried his best to find __11  , and with their backing, he soon had a new boat and five-man __12  -the Boom Crane Crew. Last year alone the crew
 __13_ from the water 44,055 gallon durms,1,104 tires and enough plastic bags to __14__  a football
field. Much of the waste will be __15__.
      "Robert's operation is the only one actually in __16___on the river," says Mark of the Mississippi
River Basin Alliance, a union of environmental groups. "It's the __17_I have ever seen in 20 years, and he
is inspiring others to do the __18_ ."
      "The river has given me a livelihood and brought me so much _19_ ," Robert says, "I want to do
something in __20_ ."

     One summer evening I was sitting by the open window, reading a good science storybook. (1) I was so interested in the story I was reading that I did not notice that it was getting dark. When I realized it was too dark for me to read easily, I put the book down and got up to turn on the light. Just then I heard someone crying, "Help! Help!" It seemed to come from the trees at the other end of the yard. (2) I looked out but it was now too dark to see anything clearly. Almost immediately I heard the cry again. It sounded like a
child, but I could not imagine what anybody could be doing in our backyard, unless one of the
neighborhood children had climbed a tree and had not been able to get down.
     I decided that I should to out and have a look in the yard, just in case someone was in trouble. I turned on the light and found for myself a flashlight and a stick in the room. I thought they might be useful. Armed with these, I went out into the yard. Once again I heard the cry and this time there was no doubt that it
came from the trees at the far end of the yard. "Who's there?" I called out as I walked across the yard
towards the trees. But there was no answer. With the help of my flashlight, I searched all over that end of
the yard, including the branches of the tree. There was no sign of anybody or anything. I came to the
conclusion that my imagination was playing tricks on me, probably because of the story I was reading
about strange creatures on another planet.
     Feeling rather foolish about hunting around in my own backyard with a baseball bat, I went back into
the house and put the bat and the flashlight away. I had just sat down to read my book again when I was
frightened by the cry of "Help! Help!" from right behind me. I dropped my book and jumped up. There,
sitting on the table was a large green and red bird. It was my neighbor's parrot(鹦鹉)! While I was out in
the yard, the parrot must have seen the light in the living room and come in through the open window.