完形填空。TheU.S.governmenthasrecentlyhelpedpeoplelearnmoreaboutthedangersofearthquakesbypublishingamap.Thismapshowsthe1ofanearthquakeineachpartofthecountry.Theareasofmap

Question

完形填空。

     The U.S. government has recently helped people learn more about the dangers of earthquakes by
publishing a map. This map shows the    1    of an earthquake in each part of the country. The areas
of map where earthquakes are    2    likely to break out are called earthquake "belts". The government
is working hard to help    3    the answer to these two questions:
     1. Can we foretell earthquakes?
     2. Can we control earthquakes?
     To answer the first question scientists are looking very    4    at the most active fault systems in the
country     5    the San Andress fault in California. A fault is a break between two sections of the earth's
    6   . These breaks between sections are the places where earthquakes happen. Scientists look at the
faults    7    changes which might show that an earthquake was    8    to happen. But it will probably be
many years    9    we can foretell earthquakes accurately (精确地). And the control of earthquake is even
   10   away. 
     Nevertheless there have been some interesting   11   in the field of controlling earthquakes. The most
interesting   12   the Rocky Mountain Arsenal earthquakes. Here water was put into a layer of rocks 4 000
meters below the surface of the ground. Shortly after this injection of water there were a small number
of earthquakes. Scientists have   13   that the water that was injected into the rocks worked like oil   14   
each other. When the water "oiled" the fault it became slippery and the   15   of an earthquake was released
(释放). Scientists are still   16   at the site of these earthquakes. They have realized that there is a   17   between
the injection of the water and the earthquake   18  . They have supposed that it   19   be possible to inject some 
 20   of fluid like water into faults and change one big earthquake into a number of small harmless earthquakes.

(     )1. A. ideas         (     )2. A. still         (     )3. A. find          (     )4. A. carefully     (     )5. A. as            (     )6. A. surface       (     )7. A. in            (     )8. A. ready         (     )9. A. before        (     )10. A. kept          (     )11. A. changes       (     )12. A. concerns      (     )13. A. suggested     (     )14. A. on            (     )15. A. resource      (     )16. A. discussing    (     )17. A. experimenting     (     )18. A. activity      (     )19. A. should        (     )20. A. amount

B. places         B. even           B. discover         B. closely       B. for              B. ground        B. for             B. certain          B. when          B. broken          B. developments       B. connects       B. supposed       B. with            B. energy          B. searching       B. similarity    B. deed          B. must            B. form

C. chances       C. ever              C. decide            C. eagerly        C. such as           C. land          C. with             C. afraid           C. since         C. distant           C. movements       C. contents        C. explained      C. at              C. force             C. experimenting       C. touch        C. effect         C. might           C. set

D. signs            D. most             D. study            D. patiently         D. for example   D. rock          D. on              D. about             D. if             D. farther         D. researches        D. confuses       D. determined                  D. for            D. strength           D. remaining      D. connection     D. result         D. cold             D. kind

Answer 1

1-5: C D B B C   6-10: A B D A D   11-15: B A D A B   6-10: C D A C D