Jeff Keith has only one leg. When he was only twelve years old, Jeff had cancer. Doctors had to 　16　 off most of his right leg.

　17　 Jeff puts on an artificial leg(假肢). The leg is plastic. With the plastic leg, Jeff can ski, ride a bicycle, swim, and play soccer. He can also run.

Jeff made a plan with his friends who had plastic legs, 　18　. They decided to  　19　 across America. They all wore special T-shirts. 　20　 it was “Run, Jeff, Run, Jeff Keith’s Run Across America”.

Jeff Keith ran across the United States from the east to the west 　21　 he was twenty-two years old. He started running in Boston(波士顿). Seven 　22　 later, he stopped 　23　 in Los Angeles（洛杉矶）. He ran 3,200 miles (1 mile = 1.6093km). Jeff wore out thirty-six pairs 　24　 running shoes and five plastic legs. Jeff 　25　 in cities on the way to Los Angeles. In every city people gave Jeff money. The money was not for Jeff, 　26　 for the American Cancer Society. The Society used the money to help people know 　27　 about cancer.

On the way to Los Angeles, Jeff talked to people about 　28　. Jeff is disabled, but he can do many things. He finished college and is studying to be a lawyer(律师). Jeff says, “People can do 　29　 they want to do. I want people to know that. I ran 　30 for disabled people. I ran for everybody.”

1.A. take       　B. cut            C. put               D. set

2. A. Every day 　B. One day      C. Some day       D. A day

3. A. also      　B. too            C. either           D. neither

4.A. walk       　B. fly            C. swim         D. run

5. A. On              B. In         C. With          D. Above

6.A. while      　B. because        C. when          D. if

7. A. months    　   B. days        C. hours            D. minutes

8.A. running      B. to run     C. walking      D. to walk

9.A. at     　B. for            C. in               D. of

10.A. reached   　B. studied        C. stopped      D. started

11. A. and      　B. but        C. or           D. so

12.A. more　　　 B. less        C. fewer            D. little

13.A. cancer    　 B. walk      C. society      D. America

14.A. any       　 B. thing     C. nothing  D. anything

15. A. not only    B. not       C. only         D. just

--My parents always tell me _________ others late at night.

　　--They're right. It's not polite.

　　A. call　　　　　　　 B. not call　　　　　C. not to call　 D. to call

 Laboratory　work　is　your　chance　to　learn　science　firsthand.　It　can　be　fun　but　you　must　be　careful　to　prevent　injury.　Listen　closely　when　your　teacher　reads　and　explains　the　rules　before　your　first　lab　lesson.

    LABORATORYRULES

    Throughout　the　lesson

    ·Do　not　enter　the　science　lab　without　the　teacher’s　permission.·No　food　or　drinks　are　to　be　alowed　in　the　science　lab.

    Before　the　Experiment

    ·Read　al　instructions　carefuly　before　every　experiment.

    ·Prepare　al　apparatus（仪器）and　arrange　them　so　that　you　wil　not　knock　them　over　while　doing　the　experiment.

    During　the　Experiment

    ·If　you　are　unsure　of　how　to　use　any　apparatus　or　how　to　operate,　ask　your　teacher　for　help.·Never　smel　or　taste　chemicals　unless　your　teacher　gives　permission.

    After　the　Experiment

    ·Wash　al　apparatus　after　use　and　return　them　to　the　places　where　they　were.

    ·Throw　waste　materials　in　proper　waste　baskets.　　　　First　Aid　　　　

    ·Report　al　accidents　to　your　teacher　immediately.

    ·If　you　spil（ 溅 出 ）any　chemicals　onto　your　body　or　clothing,　wash　with　plenty　of　water　and　report　to　your　teacher.

   1.　Your　teacher　wil　probably　tel　you　the　rules　above　_____　the　first　lab　lesson.

    A.　before　　　　　B.　since　　　　C.　during　　　　D.　after

2.　Before　every　experiment,　you　should　_____.

    A.　taste　the　chemicals　first

    B.　clean　al　the　apparatus

    C.　read　al　instructions　carefuly

    D.　report　al　the　accidents　to　the　teacher

  3.　When　you　are　not　sure　how　to　use　al　apparatus,　_____.

    A.　try　them　on　your　own

    B.　read　the　rules　carefuly

    C.　ask　your　teacher　for　help

    d.　put　them　back

 4.　It　is　clear　that　you　can　_____.

    A.　 bring　food　into　the　lab

    B.　enter　the　lab　anytime

    C.　smel　chemicals　as　you　like

    D.　learn　science　directly　in　the　lab

    5.　If　you　get　chemicals　on　the　clothing,　you　can　find　ways　to　solve　it　in　the　part　_____.

    A.　Before　the　Experiment

    B.　First　Aid

    C.　During　the　Experiment

    D.　After　the　Experiment