问题
单项选择题
下列关于短效口服避孕药服用方法的叙述，正确的是（）
A.月经来潮第1天起，每天I片，连服22天
B.月经净后第1天起，每天1片，连服22天
C.月经来潮第5天起，每晚1片，连服22天
D.有房事时服1片
E.月经来潮第5天服1片，20天后再服1片
答案
参考答案：C
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下列关于短效口服避孕药服用方法的叙述，正确的是（）
A.月经来潮第1天起，每天I片，连服22天
B.月经净后第1天起，每天1片，连服22天
C.月经来潮第5天起，每晚1片，连服22天
D.有房事时服1片
E.月经来潮第5天服1片，20天后再服1片
参考答案：C
As darkness fell, hundreds of people in the Swiss village left their houses. They were staring（注视）forward at the mountain top in the distance. It was covered with ice and snow－beautiful and dangerous. The huge mountain is called Matterhorn. Mountain climbers had 40 the top through the southem route（路线）. But no one had ever dared to try a winter climbing up the northern side. But now one man was daring to try the 41 route. He was Walter Bonatti, a great mountain climber 42 Italy. For two days he had climbed. The village people had watched him anxiously（焦虑）. Now they were waiting to see his signal. If he planned to 43 the next day, he would light（点燃）a green signal（信号）. A red light would mean that he was turning back. A tiny green light 44 high on the mountain side. Bonatti was not giving up! The people 45 . The next day he continued his way upward. He was so lonely and so 46 ! But he would not give up. Again that night he lit the green light. In the morning, Bonatti 47 . He could not see the top；he knew he was 48 there. Though the climb was painful, he moved up. Bonatti had spent months 49 for the climb. Was the training enough? Did he have the strength and skill to climb to the top? He was finally at the top! News about his. 50 was radioed to the world. The trip down the southern route was easy. He was warmly welcomed in the village. He had done the “ 51 ” and would be well remembered as a climber of all time.
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