Read the following text. Choose the best word or phrase for each numbered blank and mark A,B,C,or D on ANSWER SHEET 1.
Text
At present groups of scientific workers,often 26 by their governments,spend their time in 27 the 28 of earthquakes. It is very 29 that they will be able to 30 earthquakes or influence the direction of their movements,which are determined by events far below the surface of the earth. But the facts they report and the theories 31 by those facts may enable scientists to 32 the centers of future earthquakes and even 33 the time of their 34 . It is only when the 35 of events that we call an earthquake can be seen as a pattern that predictions can be made. Part of this pattern is external and 36 or capable of being recorded by 37 instruments above the earth's surface. Scientists and engineers studied the 38 of the San Francisco earthquake. The city was rebuilt,and new features were 39 to strengthen buildings and maintain a 40 water supply in the event of another earthquake. The water mains(=main pipes) were fitted with control valves which would enable water to travel by different routes round broken places. Large underground tanks were constructed to supply water if 41 supplies could not be tapped. Special measures were 42 to prevent fires,which often do more damage than earthquakes themselves. The San Francisco earthquake 43 scientists with important information. Since the effects of the break were visible at the surface,scientists could 44 what actually happened,and reports of the incident were an important 45 to the world's store of knowledge about earthquakes.
26.閿涚眲閿涚掸rovided 閿涚眳閿涚氮upplied 閿涚眴閿涚氮upplemented 閿涚眹閿涚氮upported
27.閿涚眲閿涚氮earching 閿涚眳閿涚旦esearching 閿涚眴閿涚氮tudying 閿涚眹閿涚郸n working
28.閿涚眲閿涚郸bservation 閿涚眳閿涚禒nformation 閿涚眴閿涚禉ehaviour 閿涚眹閿涚禈ppearance
29.閿涚眲閿涚掸robably 閿涚眳閿涚担ikely 閿涚眴閿涚惮nlikely 閿涚眹閿涚担ike
30.閿涚眲閿涚掸revent 閿涚眳閿涚掸rotect 閿涚眴閿涚弹arn 閿涚眹閿涚禋ause
31.閿涚眲閿涚掸rovided 閿涚眳閿涚郸ffered 閿涚眴閿涚氮uggested 閿涚眹閿涚禌iscovered
32.閿涚眲閿涚担ocate 閿涚眳閿涚掸lace 閿涚眴閿涚禎ix 閿涚眹閿涚但ook
33.閿涚眲閿涚禎oretell 閿涚眳閿涚弹arn 閿涚眴閿涚掸revent 閿涚眹閿涚掸redict
34.閿涚眲閿涚禈ppearance 閿涚眳閿涚禒ncident 閿涚眴閿涚郸ccurrence 閿涚眹閿涚禋oming
35.閿涚眲閿涚禋onsequence 閿涚眳閿涚氮eriousness 閿涚眴閿涚氮equence 閿涚眹閿涚旦esult
36.閿涚眲閿涚淡isible 閿涚眳閿涚淡isual 閿涚眴閿涚禒nvisible 閿涚眹閿涚淡ision
37.閿涚眲閿涚氮ensible 閿涚眳閿涚氮ensitive 閿涚眴閿涚氮entimental 閿涚眹閿涚氮enseless
38.閿涚眲閿涚禍fforts 閿涚眳閿涚禈fford 閿涚眴閿涚禈ffects 閿涚眹閿涚禍ffects
39.閿涚眲閿涚禍ntered 閿涚眳閿涚旦ecommended 閿涚眴閿涚但roduced 閿涚眹閿涚掸repared
40.閿涚眲閿涚禋ontinual 閿涚眳閿涚禋onstant 閿涚眴閿涚禋onsistent 閿涚眹閿涚掸ersistent
41.閿涚眲閿涚单ormal 閿涚眳閿涚郸rdinary 閿涚眴閿涚掸roper 閿涚眹閿涚禈ppropriate
42.閿涚眲閿涚禈ffected 閿涚眳閿涚禍ffected 閿涚眴閿涚但aken 閿涚眹閿涚禈dapted
43.閿涚眲閿涚但old 閿涚眳閿涚掸rovided 閿涚眴閿涚禐ave 閿涚眹閿涚郸ffered
44.閿涚眲閿涚禒nquire 閿涚眳閿涚禈mplify 閿涚眴閿涚禎ollow 閿涚眹閿涚郸bserve
45.閿涚眲閿涚禋onstitution 閿涚眳閿涚禌istribution 閿涚眴閿涚禒nstruction 閿涚眹閿涚禋ontribution

• phrase [freiz] n.短语；词组；措词 (初中英语单词)
• scientific [,saiən´tifik] a.科学(上)的 (初中英语单词)
• enable [i´neibəl] vt.使能够；赋予权力 (初中英语单词)
• capable [´keipəbəl] a.有能力；能干的 (初中英语单词)
• strengthen [´streŋθən, ´strenθən] vt.加强 vi.变强 (初中英语单词)
• maintain [mein´tein] vt.维持；保持；继续 (初中英语单词)
• visible [´vizəbəl] a.可见的；明显的 (初中英语单词)
• actually [´æktʃuəli] ad.事实上；实际上 (初中英语单词)
• incident [´insidənt] n.小事件；事变 (初中英语单词)
• earthquake [´ə:θkweik] n.地震；大变动 (高中英语单词)
• external [ik´stə:nəl] a.外部的；外面的 (高中英语单词)
• studied [´stʌdid] a.故意的；有计划的 (高中英语单词)
• underground [,ʌndə´graund] ad.&a.地下(的) (高中英语单词)