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not necessarily 在這里意為 “ 不一定 ” 。s a car or a plane C. the government and the authorities don39。 and it takes just 15 seconds to switch between flying and driving. With its wings fully open and the propeller(螺旋槳 )spinning, it can take off from any airfield. Flying cars are quicker than traditional ones for travelling from city to city,and they can run on ordinary fuel. Another big advantage is that they are cool,like something you would see in an action film. At the moment, however, the flying car39。re ________ happy. A. seldom B. merely C. fairly D. chiefly 6. Intelligence doesn39。t ________ mean success. You need to work hard as well. A. honestly B. formally C. simply D. necessarily 7. She ________ an old friend of hers yesterday while she was shopping at the department store. A. turned down B. dealt with C. took after D. came across 8. The users of this new mobile phone can check e173。s wheels are illegal to leave the ground. That is not because of technical reasons or problems with the design. It is because the various roads and aircraft authorities simply cannot agree on whether it is a car or a plane. “ The government and the authorities have never thought seriously about a flying car, ” says Alan Price, the president of the pany that has developed it. “I wanted a car that could fly and drive, but it is difficult to find an anization prepared to insure the vehicle against accidents.” Nevertheless, the pany hopes to produce and deliver its first flying car soon. The pany already has orders for 40 of them. The majority of the p