68. I could not [speak] the language, [neither] [had I] friends [nor]
           A                   B      C       D 
 acquaintances in the town.  
答案：C。应改为my，形容词性的物主代词。

69. The salesman told me [that] a good pair of glasses [were] supposed
                     A                     B     
[to last] [at least] 3 to 4 years.                
    C          D 
答案：B。a good pair of glasses 做主语，动词要用单数。

70. You [had better] [return to] your dormitory and [to enjoy] the
       A          B                        C 
company of your room—mates instead of [wasting] time with me.
                                     D 
答案：C。应改为：enjoy。 因为enjoy 和return 并列，都跟在had better 后面，要用动词的原形。

Part IV  Cloze 

Television broadcasts are 71 to an area that is within the 72 of the sending station or its relay (中转站). 73 television relays are often placed on hills and mountains so that they can 74 a wider region, they still can not cover more land than one from the hilltop 75 a clear day.

However, the rays also go out into the atmosphere, 76 there is a relay station on a satellite that 77 around the earth, it can send the pictures to any point on the earth from which the satellite is 78 .Three satellites 79 turning around over the equator（赤道）send any television program to any part of the earth. 80 makes it possible for world 81 of newspapers to give the news in all countries at the same time. 82 it may be possible for a subscriber(订户)to a televised newspaper to 83 a button and see a newspaper page 84 his television screen. He could also decide when he wants the page 85 , 86 ,by dialing different number such as 87 on a telephone dial, he could choose the language or the edition of the paper he wants to read.