现代血管支架始于20世纪（） A.60年代初 B.60年代末 C.50年代初 D.5

阅读下面短文,选择恰当的单词填空. 每词限用一次, 其中有两项多余.

A is not allowed;    B hot;       C slowly;     D before      E stopped the car;   F enjoyed themselves;     G until    H took off  their clothes      I  in the countryside           J crowded;

 
Linda and Betty were both nineteen years old. In June, after a school year was over, they decided to take a vacation _小题1:___. They went to several towns and villages, visited some places of interest, saw and heard a lot of interesting things. They _小题2:___  very much.
One afternoon, they were going to stay overnight in a small town. It was too   __小题3:__ to go further and they wished they could find a river and swim in the cool water. They were driving the car __小题4:__ while they were looking around. Suddenly Linda saw a lake not far away. They drove there fast and _小题5:____ by the lake. They looked around and found a woman sitting on a stone and fishing there. After they   ___小题6:_____  and were going to jump into the water, the woman came up to them and shouted, “Sorry, madams. Swimming __小题7:___ in the lake!”
“Why didn’t you tell us about it _小题8:______ we took off our clothes?” Betty said angrily.    “But it isn’t forbidden to take off clothes by the lake,” said the woman.