WHICH OF THE FOLLOWING IS MENTIONED IN THE PASSAGE ABOUT CACTUS

45. Which of the following is mentioned in the passage about cactus?

A.They have deep root system

B.They retain water from one rainfall to the next

C.They survive in the desert because they do not need water

D.They get water from deep below the surface of the desert.

II. Read the passage and then fill in each blank with the best completion.

FIGHTING BACK DESERT EXPANDING

More than a billion people all over the world are under the(46) of desert expansion, (47)

few of them are aware that they themselves cause it and are also its (48) . People cut

down trees for fuels and farmland. Their herds eat up the grass (49) valley floors and hillsides.

The climate and soil quality, (50) , are effected and forests are turned into deserts.

Efforts have been made to solve the (51) . One common method is called “dune fixation”: if a

fence is built, it “fixes” sand dunes. This fence will prevent the dune (52) advancing. In Algeria,

people planted a green wall of trees across the edge of the Sahara (53) desert sand from

spreading. People in countries around the sahara built fences made of brushwood or dead palm leaves for the

same(54) Obviously, the Sahara will become much larger (55) something continues to

be done to solve this problem.

(56) , life is a constant struggle for those living near the edges of the Gobi Desert. In some

places, many people had to leave their homes (57) their wells became dry and sand burried their

houses and crops.(58) , governments in nearby areas have had local people palnt trees and banned

burning firewood (59) fuels. Even Beijing is threatened by sandstorms every year. Strong winds

blows sand and dust from the Gobi Desert into Beijing 30 to 40 days a year, (60) a green wall of

forests has been built to protect the city.