完形填空4.

二、完形填空

4.Lookatyourwatchforjustoneminute._1___thattime,thepopulationof

theworld__2___259.Perhapsyouthinkthatisn’tmuch.However,duringthenexthour,over15,540morebabieswill3_____ontheearth.

Soit___4____on,hourafterhour.Inoneday,peoplehavetoproducefoodforover370,000moremouths.Multiplythis__5___365.Justthinkhowmanymoretherewillbeinoneyear!What__6___inahundredyear?

Theincreasingpopulationmaybe__7___challengeoftheworldtoday.Theworld’spopulationisgrowing___8___.Twothousandyearsago,therewereonly2509peopleontheearth.Fourhundredyearsago,thenumberwasover500million.Atthebeginningof__10__century,theworld’spopulationwasabout1.7billion.In1970,thisnumberwasover3.6billion.In1990,itreachedmorethanfivebillion.Nowatthebeginningofthe21stcenturytheworld’spopulationhaspassedsixbillion.Peoplesaythatbytheyear2010,itmaybesevenbillion.Thatmeansthatinabout600years,therewillbestandingroomonlyontheearth.Eachpersonwillhaveonesquaremetreofspacetolivein.Therewillbehardlyenoughspaceforanybodyelse.

1.

A.

Before

B.

During

C.

Between

D.

In

2.

A.

increaseto

B.

increaseby

C.

increasedto

D.

increasedby

3.

A.

born

B.

beborn

C.

beenborn

D.

havebeenborn

4.

A.

goes

B.

went

C.

go

D.

going

5.

A.

to

B.

in

C.

by

D.

on

6.

A.

willhappen

B.

happen

C.

hashappened

D.

ishappening

7.

A.

thelarger

B.

thelarge

C.

thelargest

D.

largest

8.

A.

largerandlarger

B.

smallera