完型填空(第51~65題,每題1分,共15分)
閱讀下面的短文,文中有15處空白,每處空白給出了4個選項,請根據短文的內容從4個選項中選擇1個最佳答案,涂在答題卡相應的位置上。
Cell Phone Lets Your Secret out
Your cell phone holds secrets about you. Besides the names and 51 that you've programmed into it, traces of your DNA linger on the device, according to a new study.
DNA is genetic material that 52 in every cell. Like your fingerprint, your DNA is unique to you- 53 you have an identical twin. Scientists today routinely analyze DNA in blood, saliva, or hair left 54 at the scene of a crime. The results often help detectives identify 55 and their victims. Your cell phone can reveal more about you 56 you might think.
Meghan J. McFadden, a scientist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cell phone and later dropped the 57 This made her wonder whether traces of DNA lingered on cell phones-even when no blood was involved. 58 she and colleague Margaret Wallace of the City University of New York analyzed the flip-open phones of 10 volunteers. They used swabs to collect 59 traces of the users from two parts of the phone: the outside, where the user holds it, and the 60, which is placed at the user's ear.
The scientists scrubbed the phones using a solution made mostly 61 alcohol. The aim of washing was to remove all detectable traces of DNA. The owners got, Heir phones 62 for another week. Then the researchers collected the phones and repeated the swabbing of each phone once more.
The scientists discovered DNA that 63 to the phone's speaker on each of the phones. Better samples were collected from the outside of each phone, but those swabs also picked up DNA that belonged to other people who had apparently also handled the phone. 64, DNA showed up even in swabs that were taken immediately after the phones were scrubbed. That suggests that washing won't remove all traces of evidence from a criminal's device. So cell phones can now be added to the 65 of clues that can clinch a crime-scene investigation.
51
A numbers
B music
C secrets
D films
52
A appeals
B appoint
C appears
D applies
53
A because
B unless
C although
D still
54
A about
B in
C for
D behind
55
A criminals
B people
C men
D policemen
56
A when
B until
C before
D than
57
A device
B paper
C file
D document
58
A However
B So
C But
D Nevertheless
59
A invisible
B non-existent
C visible
D apparent
60
A card
B keys
C screen
D speaker
61
A of
B up
C on
D into
62
A upon
B back
C without
D with
63
A was given
B belonged
C was owned
D became
64
A Generally
B Surprisingly
C Disappointedly
D Shortly
65
A explanation
B discovery
C book
D list
第六部分:
文章大意:你的手機承載著你的秘密。一項新研究發現,手機里除了存有你輸入的名字和號碼外,還留有你的微量DNA(脫氧核糖核酸)。因此,現在手機可以作為協助犯罪現場調查得出定論的線索之一。
51 A人們通常在手機中儲存人名和他們的電話號碼。所以A是最佳選擇。雖然手機中也能儲存音樂和秘密信息,相比之下,不如A合理。至于儲存電影,就有點離譜了。
52 C這個句子的意思是:DNA是一種存在于每一細胞中的基因物質。根據這一理解,選項A、B、D均不能選作答案。
53 B上文的意思是:如同指紋,你的DNA是獨一無二的。因此,此處必須選擇unless,其他選擇均不符合句義,也違背了我們對DNA的基本常識。
54 D leave behind是固定搭配,意即:留下。此處leave使用的是過去分詞形式。
55 A根據上下文的理解,研究結果是用來幫助偵探識別罪犯和受害人的,B、C、D都不能表達這一層意思。
56 D句子中的more提供了選擇的線索,more…than的搭配最能完成該句的意思。
57 A定冠詞the說明該選項所指內容在前面黃肌瘦已經提到,即cell phone。除了device,其他選項均不能指代cell phone。
58 B四個選項中只有B是正確選擇。連接了其前后兩個句子,使其形成因果關系:她思考微量DNA是否會停留在手機上,所以,她與同事們一起對10名志愿者的翻蓋手機進行了分析研究。A、C、D表示的都是轉折的意義關系。
59 A句子當中的traces指的是DNA traces(微量DNA),而DNA traces是肉眼看不到的,所以選擇invisible
60 D研究者從手機的兩部分收集手機微量DNA:一是手機外殼,二是喇叭。貼在耳朵上的不可能是card、screen和keys。
61 A be made of是固定搭配,意即:由…制成。a solution made mostly of alcohol:一種主要由酒精制成的溶液。
62 B根據上下文的理解,應該選擇back:手機擁有者拿回了手機,再使用一個星期。
63 B該句要表達的意思應該是:科學家在每一個手機上發現了屬于手機擁有者的DNA。belong to是固定搭配,意思是:屬于。A不符合句義,C和D不符合語法。
64 B最后一段的第一和第二句告訴我們手機經過清洗后仍然有微量DNA出現。所以這里要用surprisin9這個副詞,表示令人驚訝。
65 D根據上下文的理解,應該選擇list,其它三個選項與句子的意思不符。
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