题目内容
下列空场采矿法中，()用于开采水平和倾斜的矿体，在矿块或采空矿房和矿柱交替布置，回采矿房时，留连续的或间断的规则矿柱，以维护顶块岩石。
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The first things I saw were my own bloodshot eyes. Where was that Visine.'？ My hair looked like Attila the Hun ad spent the night camping in it. Well, I'd pull it back into a ponytail and take the tangles out later.
And then I saw it. It was a huge swelling on the front of my chin that had to be the size of a small golf hall. Surely I was hallucinating from lack of sleep. I had never seen anything like that be- fore, I'd heard of people getting hives from nerves. But a single hive, on the front of my face？ I gingerly touched it. A hard swelling met my curious fingertips. What had caused this？ The pizza I'd consumed at midnight or the mountain Dew I'd consumed at two and four and six in the morning？ Perhaps it was the Cap's Crunch at three or the candy bar at five. My stomach had a strict policy. If I was going to keep it up all night, it insisted on being fed.
How was I going to cover this up？ I rummaged through all my toiletries until I found my lone bandage, put there for emergencies. Well, this qualified as one. Oh no, that looked really stupid. How embarrassing. Oh well, no time to do anything else about it now. My philosophy final was waiting for me. My beleaguered brain had tried all night to grasp the arguments of different philosophies so that I could write them down on the essay test this morning.
I loved to hear our philosophy professor in class. I could follow the arguments when he discussed them, but trying to formulate them on my own just wasn't happening. Perhaps the bump was the result of stress. I had to pass this final or I would fail the class. And I couldn't fail the class, or I would have to take the college's summer school sessions. And I couldn't go to summer school be- cause I needed to work to help pay for next fall's tuition.
Swallowing the last gulp of fiat Mountain Dew, I headed for class. I picked a seat that didn't directly face the clock. That would only make me more nervous, and God knew I had already used up my adrenaline(肾上腺素)supply. Dr. Wennberg passed out the essay books while explaining the roles we would have exactly one hour. My two pencils in hand, I waited for the signal.
"Begin."
I closed my eyes took a deep breath and said a prayer "Please, God, help me remember all that I' ye studied for this test."
I looked over the questions. I could do this. I had to do this. I began writing.
Twenty minutes had gone by. I had been writing as fast as I could before I forgot the information. So far so good. But my eyes were so tired. They hurt so badly. They felt so heavy. I' d just rest them for a minute. I leaned my puffy chin on my hand. Someone sneezed. I came to with a start. What？ I'd fallen asleep？ I'd never done that before in a final! Oh no! Fearfully, I looked at the clock.
Only ten minutes left？ I'd slept a half hour？ Oh no !
I thought I'd used up all my adrenaline, but 1 was wrong. I broke out in a cold sweat. What could I do in ten minutes7 Think, I must think. I need a plan. I'm doomed. No, think. I began writing as fast as I could to finish the questions.
I stared at the last blank page of the essay test booklet with its nearly ruled lines. Dare 17 I had nothing to lose. I still had two minutes. I wrote Dr. Wennberg.! told him how sorry I was. How I'd stayed awake all night to study because this was important to me, only to fall asleep during the exam. How I'd really wanted to do better I asked for mercy.
One week later, I stood in front of the test board where the results would be posted. The mysterious swelling on my chin had gone
The writer says that he had to pass the philosophy final (Paragraph 5) because ______. Ⅰ. if not, he would have had to attend the college' s summer school Ⅱ. otherwise he would have been able to continue his study in the class Ⅲ. if he had failed the phil
人机系统常见的事故中，卷入和挤压是造成机械事故的主要原因，其发生的频率最高，约占机械伤害事故的()。
The countermeasures the nation's main air carriers would take to prevent any sharp drop in
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