Question

Many scientists say that the world is getting hotter and hotter. If they are right, the ice at the North and South    Pole will melt eventually.    If this happens, the sea  will    1    and may cover    most    2 all of Singapore.

This will force everybody to move to a 3   country.

We know that the sun 4   the earth. The heat from the sun hits the 5    , and some of 6  goes back into the sky. However, factories and cars 7 a lot of carbon dioxide(二氧化破）. When the gas rises into the sky, the heat from the sun can come 8  them hut the heat from the ground cannot. It 9  near us in the sky and makes the 10  hotter and hotter every year.

Scientists call this the u greenhouse effect” because a greenhouse is a small glass 11 which is hot inside. It is used for 12 plants in cool countries. Many countries are 13 about the greenhouse effect. They are trying to stop factories and cars from sending 14 gases into the sky. Scientists are not sure when the world will get much hotter. Some people say that the greenhouse effect has 15 already and has begun to affect the world’s weather.

(A    ) 1.    A. rise    B. fall

C. change    D. disappear

(B    )2.    A. and    B. or

C. but    D. till

(C    )3.    A. better    B. larger

C. safer    D. farther

(D    )4.    A. shines    B. circles

G. covers    D. heats

(A    )5.    A. ground    B. sky

C. mountain    D. forest

(B    )6.    A. them    B. it

C.those    D. such

(C    )7.    A. make    B. spread

C. produce    D. from

(A    )8.    A. through    B. over

C. into    D. toward

(D    )9.    A. hides    B. continues

C. follows    D. stays

(B    ) 10.    A. cloud    B. air

C. season    D. temperature

(A    ) 11.    A. building    B. flat

C. tool    D. machine

(D    ) 12.    A. putting    B. storing

C. cutting    D. growing

(C    ) 13.    A. excited    B. disappointed

C. worried    D. pleased

(B    ) 14.    A. dangerous    B. harmful

C. heavy    D. useful

(C    ) 15.    A. meant    B. improved

C. started    D. stopped

Answer 1