On Wednesday afternoon Annie took the bus into town to shop in the market. For an hour or so she would walk up and down between the stalls looking at everything, buying here and there, and   1  a sharp lookout for the bargains that were something to be haD．And then, with all the   2  she needs bought she would leave the market for the   3  of the town to spend another hour   4  she liked best, looking in furniture-shop windows.

One Wednesday she found a  5  shop full of the most delightful things, with a   6  inviting anyone to walk in and look round without   7  they had to buy something. Annie hesitated a moment   8  stepping through the doorway where, almost at once, she stopped   9  before a green armchair. There was a card on the chair which  10  ,“This fine chair is yours for less than a pound a week,” and very small at the bottom, “Cash price eighty-nine pounds fifty.” A pound a week …Why, she could almost pay that out of her housekeeping money and never   11  it!

A voice at her shoulder made her   12  .“Can I help you, Madam?” She looked   13  at the assistant who had come softly to her  14 

“Oh, well, no,” she said, “I was just   15  .”

“We have chairs of all kinds in the   16  . If you'll just come up, you will find something to  17  you.”

Annie, worried at the thought of being   18  to buy something she didn't   19  , left the shop   20  .

1．  A．taking      B．making     C．fixing       D．keeping

2．  A．chairs　   B．furniture　      C．things       D．bargains

3．  A．shops　    B．streets           C．delightful things     D．bus station

4．  A．in the way　    B．by the way　　       C．in a way   D．in one way

5．  A．new　　  B．noisy C．large D．strange

6．  A．message　       B．notice       C．note  D．flag

7．  A．arguing　 B．declaring  C．frightening       D．feeling

8．  A．when　　 B．before      C．after  D．while

9．  A．doubted　　    B．surprised　      C．puzzled     D．delighted

10．A．wrote　　       B．told   C．informed  D．said

11．A．lose   B．miss  C．pass   D．make

12．A．jump　　 B．run    C．laugh D．surprise

13．A．round　　       B．straight     C．behind      D．up

14．A．place B．back  C．side   D．front

15．A．thinking　　   B．looking     C．walking    D．passing

16．A．doorway　      B．storehouse　    C．showroom　　 D．market

17．A．suit   B．fit     C．serve D．match

18．A．advised　　     B．made C．persuaded　　 D．cheated

19．A．like   B．afford       C．pay   D．need

20．A．slowly　　      B．thoughtfully　 C．hurriedly  D．carefully

D
　　In the atmosphere,carbon dioxide actd rather like a one-way mirror or the glass in the roof of a greenhouse which allows the sun's rays to enter but prevents the heat from excaping.
　　According to a weather expert's prediction,the atmosphere will be 3 warmer in the year 2050 than it is today, if man continues to burn luels at the present rate. If this warming up took place,the ice caps in the poles would begin to melt,thus raising sea level several meters and severely flooding coastal cities.Also，the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere(半球),psooicbly resulting in an alteration of earth's chief food growing zones.
　　In the past,concern about a man - made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet.But the weather experts are now paying more attention to West Antarctic,which may be affected by a warming on the scale that will possibly take place in the next fifty years from on burning of fuels.
　　Satellite pictures showthat large areas of Antarctic ice are already disappearing.The evidence available suggests that a warming has taken place.This fits the theory that carbon dioxide warms the earth.
　　However,most of the fuel is burnt in the northern hemisphere,where temperatures seem to be falling.Scientists conclude,therefore,that up to now natural influences on the weather have exceeded those caused by man.The question is:Which natural cause has most effect on the weather?
　　One possibility is the variable behavior of the sun.Astronomers at one research station have studied the hot spots and cold spots(that is,the relatively less hot spots) on the sun. As the sun rotates(旋转),every 27.5 days,it presents hotter or colder faces to the earth,and different aspects to different parts of the earth.This seems to have a considerable effect on the distribution of the earth's atmospheric pressure,and consequently on wind circulation.The sun is also variable over a long term:its heat output goes up and down in cycles,the latest trend being downward.
　　Scientists are now finding mutual relations between models of solar weather interactions and the actual climate over many thousands of years ,including the last Ice Age.The problem is that the models are predicting that the world should be entering a new Ice Age and it is not.
　　One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia(不活动，惰性) of the earth's climate.If this is right,the warming effect of carbon dioxide might thus be serving as a useful counter balance to the sun's diminishing heat.
　　68.It can be concluded that a concentration of carbon dioxide in the atmosphere would ___.
　　　A.mean a warming - up im the Arctic
　　　B.raise the temperature of the earth's surface
　　　C.prevent the sun's rays from reaching the earth's surface
　　　D.account for great changes in the climate in the northern hemiphere
　　69.Although the fuel consumption is greater in the northern hemisphere,temperatures there seem to be falling.This is _______.
　　　A.mainly because the levels of carbon dioxide are rising
　　　B.partly due to variations in the output of solar energy
　　　C.possibly because the ice caps in the poles are melting
　　　D.exclusively due to the effect of the inertia of the earth's climate
　　70.On the basis of their models,scientists are of the opinion that ________.
　　　A.the climate of the world should be becoming cooler
　　　B.the new Ice Age will be delayed by the greenhouse effect
　　　C.the man - made warming effect helps to increase the solar effects
　　　D.it will take thousands of years for the inertia of the earth's climate to take effect