Thepopulationproblemmaybethe16oneoftheworldtoday.Theworld'spopulationisgrow-ing17Twothousandyearsagotherewereonly250millionpeople18theearth.Fourhun-dredyearsagothenumberw

Question

The population problem may be the 16        one of the world today. The world's population is grow- ing 17        Two thousand years ago there were only 250 million people 18        the earth. Four hun- dred years ago the number was 19       500 million. But at the beginning of the 20        century the world's population was about 1 700 million. In 1970 this number was 3 600 million. In 1990 the number was five billion. A UN report 21        that the world's population has 22        six billion by the end of the 20th century. This is just ten 23        after it 24        five billion. People say that by the year 2050 25        may be eight billion.

(   ) 16. A. great   B. greater

   C. greatest   D. most great

(   ) 17. A. faster and faster   B. fast and fast

   C. fastest and fastest   D. faster and fast

(   ) 18. A. in   B. on

   C. at   D. for

(   ) 19. A. less   B. more

   C. to   D. over

(   ) 20. A. twenty   B. twelve

   C. twentieth   D. twelfth

(   ) 21. A. asks   B. says

   C. tells   D. speaks

(   ) 22. A. past   B. pass

   C. passed   D. passes

(   ) 23. A. weeks   B. months

   C. seasons   D. years

(   ) 24. A. get   B. gets

   C. reached   D. reach

(   ) 25 A. this   B. its

   C. one   D. it

Answer 1

 CABDC BCDCD