题目内容
不属于继发性腹膜炎常见病因的是
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rather crawl it little before although something form. make outcut away seem as away best come up Having passed what I considered the worst obstacle, our spirits rose. We made our way towards the left cliff, where the going was better, though【R1】______steeper. Here we found【R2】______snow, as most of【R3】______seemed to have been blown off the mountain. There was no vision of the mountains in the distance, the clouds were【R4】______forming all round us. About one oclock a storm【R5】______suddenly. We should have noticed its coming but we were concentrating on cutting steps and【R6】______we had time to do anything, we were unsighted by snow. We could not move up or down and had to wait motionless, getting colder and colder. 【R7】______my hood, my nose and cheeks were frostbitten, I dare not take a hand out of my glove to warm them. After two hours of this, I realized we would have to do【R8】______to avoid being frozen to death where we stood. From time to time through the mist I had【R9】______the outline of a buttress(扶垛)just above us, to descend in this wind was out of the question. Our only hope was to climb up to the buttress, and dig out a platform. at the foot of it on which we could pitch our tent. We climbed to this place and started to【R10】______the ice. At first my companion【R11】______to regard this situation【R12】______hopeless but gradually the wind died【R13】______and he clean up. At last we made a platform. big enough to pitch the tent, and we did this as【R14】______as we could. We【R15】______into our sleeping bags and fell asleep, feeling that we were lucky to be still alive.
【R1】
正常细胞性贫血是
【C8】
乙型病毒性肝炎的主要传播途径不包括
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