题目内容：

California officials are praising workers for rescuing a 13-year-old boy who fell into a river of sewage(下水道)in Los Angeles. The boy, Jesse Hemandez, ___more than 12 hours in the city’s ___underground sewage system. It is ___with refuse liquids and other waste materials , some of them __.

Jesse had been playing at a public park with other ___during a family gathering on Sunday. At one point, the children were ___pieces of wood that covered an opening ___the sewage system. One of the wooden boards broke. The boy fell about eight meters down and ___in fast-moving sewage.

The other children ___told adults what had happened. The adults then called an emergency telephone line for help. Rescuers immediately began ___Jesse underground.

With the help of cameras they floated down the pipes, rescuers eventually located Jesse ___seeing images of handprints on one of them. A crew of sanitation (环境卫生) workers hurried to the ___and opened a manhole(检查井). The first thing they ___was “Help”. Their patience and optimism __.

The crew lowered down a long rope to Jesse. The boy held onto the rope while workers ___him up. By the time workers found Jesse, about 700 meters of pipes had been___ during a 12-hour period. Jesse was potted less than two kilometers from where he ___. He was taken to a hospital for a full physical examination and to be reunited with his  ___.

More than 100 people contributed much tirelessly to the ___of Jesse. Jesse was lucky to find a small area of ___air and wait there until he was found.

1.A. wasted    B. took    C. spent    D. arranged

2.A. shallow    B. large    C. deserted    D. temporary

3.A. filled    B. faced    C. compared    D. occupied

4.A. dusty    B. unusual    C. useless    D. poisonous

5.A. visitors    B. children    C. strangers    D. parents

6.A. below    B. behind    C. over    D. on

7.A. leading to    B. consisting of    C. ending in    D. heading for

8.A. swam    B. landed    C. suffered    D. fought

9.A. seriously    B. eventually    C. quickly    D. exactly

10.A. searching for    B. caring about    C. turning to    D. calming down

11.A. before    B. unless    C. after    D. until

12.A. system    B. area    C. dustbin    D. water

13.A. saw    B. felt    C. feared    D. heard

14.A. set off    B. put off    C. turned off    D. paid off

15.A. pulled    B. packed    C. picked    D. waked

16.A. judged    B. selected    C. removed    D. inspected

17.A. dived    B. screamed    C. disappeared    D. escaped

18.A. friends    B. family    C. class    D. relatives

19.A. struggle    B. adventure    C. survival    D. existence

20.A. breathable    B. miserable    C. smelly    D. pure