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第6部分：完形填空(第52～65題，每題1分，共15分) 下面的短文有l(wèi)5處空白，請(qǐng)根據(jù)短文內(nèi)容為每處空白確定l個(gè)最佳選項(xiàng)。
51、回答51-65題：
Cancer is actually a group of many related diseases that all have to do with cells. Cellsare the very small units that make up all (51) things, including thehuman body. There are billions of cells (52 ) each person's body. Cancerhappens when cells that are not normal grow (53) spread very fast.Normal body ceils grow and divide and know when to stop growing. Over time,they also die. (54) these normal cells, cancer cells just continue togrow and divide out of control and don't die. Cancer cells usually grouptogether to form tumors (腫瘤). 
A growing tumor becomes a lump of cancer cells (55) can destroy the normal cells aroundthe (56) and damage the body's healthy tissues. This can make someonevery (57) 
Sometimes cancer cells break away from the original tumor and travel to other areas ofthe (58) , where they keep growing and can go on to form new tumors.This is how cancer (59) The spread of a tumor to a new place in the bodyis (60) metastasis (轉(zhuǎn)移)
People with cancer may feel pretty sick attimes -- but Call usually still do lots of normal things. (61) they arevery sick, kids and teenagers with cancer may still be able to go to school.They may be tired or bruise (出現(xiàn)青腫) easily, but they (62) sometimes go to camp, movie, and sleepover (在外過(guò)夜的) parties. People with cancer still like the same things they did (63) they got sick. 
Cancer in kids is rare -- but today, many kids who do get cancer go on living normal lives.The number of kids who beat cancer goes (64) every year because of newcancer treatments.So a lot of kids with cancer will some day drive cars, go to college, havecareers, and even get (65) and have families of their own. 

A． living
B．nice
C．big
D．whole 


52、
A．by
B．in
C．with
D．a(chǎn)t 


53、
A．or
B．but
C．a(chǎn)nd
D．though 


54、
A．Unlike
B．Like
C．After
D．Without 


55、
A．who
B．what
C．where
D．which 


56、
A．shape
B．tumor
C．thing
D．group 


57、
A．sick
B．rich
C．mild
D．a(chǎn)ctive 


58、
A．country
B．body
C．cell
D．place 


59、
A．spreads
B．turns
C．moves
D．travels 


60、
A．said
B．supposed
C．known
D．called 


61、
A．Incase
B．Because
C．Unless
D．If 


62、
A．can
B．must
C．should
D．need 


63、
A．before
B．a(chǎn)fter
C．once
D．while 


64、
A．down
B．by
C．up
D．forward 


65、
A．fired
B．married
C．joined
D．upset