题目内容
被疟原虫寄生的红血球在人体内的存在时间不会超过120天。因为疟原虫不可能从一个它所寄生的衰亡的红血球进入一个新生的红血球。因此，如果一个疟疾患者在进入了一个绝对不会再被疟蚊叮咬的地方120天后仍然周期性高烧不退，那么，这种高烧不会是由疟原虫引起的。 以下哪项，如果为真，最能削弱上述结论
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Some American soldiers was marching forward among snow-covered 76. ______mountains. As he could see nothing but snow, they soon became snow 77. ______-blind. They had no choice but to stop go forward under such a difficult 78. ______condition. They put up the tent so as to spend the night there, but hardly 79. ______had they put up the tent when a gust of wind sent the tent going far away 80. ______As they had never meet with such a problem, they didn’t know how 81. ______to deal with it. Lucky they were equipped with a radio transmitter, with 82. ______which they got touch with their commander, who immediately sent 83. ______out a helicopter to saving them. All the soldiers let out a shout of joy 84. ______when they got into the helicopter safe. 85. ______
Scott and his companions (同伴) were terribly disappointed, When they got to the South Pole, they found the Norwegians (挪威人) had beaten them in the (36) to be the first ever to (37) the South Pole. After planting the British (38) at the Pole, they (39) a photograph of themselves (40) they started the 950 mile journey (41) .The journey was unexpectedly (42) and the joy and excitement about the Pole had gone out of them. The sun hardly (43) . The snow storms always made it impossible to (44) the stones they had (45) to mark their way home.Captain Oates had been suffering for (46) (47) his (48) feet. At night His feet swelled (肿胀) so large that he could (49) put his boots (50) the next morning, and he walked bravely although he was in great (51) . He knew his slowness was making it (52) likely that (53) could save themselves. He asked them to leave him behind in his sleeping bag, but they (54) , and helped him on a few more miles, until it was time to put up the (55) for another night. 55().
Scott and his companions (同伴) were terribly disappointed, When they got to the South Pole, they found the Norwegians (挪威人) had beaten them in the (36) to be the first ever to (37) the South Pole. After planting the British (38) at the Pole, they (39) a photograph of themselves (40) they started the 950 mile journey (41) .The journey was unexpectedly (42) and the joy and excitement about the Pole had gone out of them. The sun hardly (43) . The snow storms always made it impossible to (44) the stones they had (45) to mark their way home.Captain Oates had been suffering for (46) (47) his (48) feet. At night His feet swelled (肿胀) so large that he could (49) put his boots (50) the next morning, and he walked bravely although he was in great (51) . He knew his slowness was making it (52) likely that (53) could save themselves. He asked them to leave him behind in his sleeping bag, but they (54) , and helped him on a few more miles, until it was time to put up the (55) for another night. 54().
Scott and his companions (同伴) were terribly disappointed, When they got to the South Pole, they found the Norwegians (挪威人) had beaten them in the (36) to be the first ever to (37) the South Pole. After planting the British (38) at the Pole, they (39) a photograph of themselves (40) they started the 950 mile journey (41) .The journey was unexpectedly (42) and the joy and excitement about the Pole had gone out of them. The sun hardly (43) . The snow storms always made it impossible to (44) the stones they had (45) to mark their way home.Captain Oates had been suffering for (46) (47) his (48) feet. At night His feet swelled (肿胀) so large that he could (49) put his boots (50) the next morning, and he walked bravely although he was in great (51) . He knew his slowness was making it (52) likely that (53) could save themselves. He asked them to leave him behind in his sleeping bag, but they (54) , and helped him on a few more miles, until it was time to put up the (55) for another night. 50().
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