A. One
B. Two
C. Three
D. Four
A. Education
B. Genetic Engineering
C. Computer
D. Family
A. to become a Miss World
B. to enter a beauty contest
C. to be intelligent
D. to be beautiful
A. it will be difficult for us to select Internet information
B. people will prefer taking a bus to buying a car
C. food will not be sold at shops
D. TV viewers will not be able to escape from seeing a lot of advertising.
A. family and parents' responsibility in the future
B. children's education
C. children's health
D. how to build a strong society
A. 13.8 million square kilometers
B. 14 million square kilometers
C. 13.8 square kilometers
D. 1.6 square kilometers
A. Because it is very hot.
B. Because it is the most isolated continent on Earth.
C. It’s precipitation every year is very low.
D. Because it is the coldest place on Earth.
A. The Antarctic Desert is covered by a permanent ice sheet.
B. It contains 90% of the Earth’s fresh water.
C. It is covered by the coasts.
D. It is covered by the oasis.
A. 1,000 researchers
B. 1,000-5,000 researchers
C. More than 5,000 researchers
D. No researchers live here.
A. Some mammals
B. Only particular cold-adapted mites and algaes
C. Penguins, seals and various species of birds
D. Some mammals and certain cold-adapted species of mites, algaes, and tundra vegetation
A. stopped
B. kept
C. took
D. put
A. woke
B. brought
C. kept
D. took
A. make up
B. get along
C. go up
D. get through
A. go with
B. go through with
C. go ahead
D. go off
A.
let
B. make
C. put
D. fix
A.
out off / on
B. up to / up
C. away from / for
D. on for / off
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