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【单选题】
Forty years ago no one was concerned about the health of the ocean, in spite of the fact that many fisheries were being over-harvested, toxic wastes were being dumped in the sea, and developers were beginning to seriously disrupt coastlines. In those days, the magnitude of the problems was small, even though it was obvious that if the trends Continued people would face severe economic and personal hardship in the future. People just didn't understand, nor did they care. Unfortunately many of our concerns were realized, but the situation could have been much worse, had we, and others, not taken action to inform. people about the ocean and the need to protect it. During our campaign to share the wonders of the sea and alert the public about the need to protect it, we have used every medium available--personal appearances, the printed word, and television. Now there is a new medium that is even more effective than its predecessors. Thanks to the Internet and computers, people can not only receive linear stories, but they can actually participate in them, exploring and learning at their own pace and as their curiosity dictates. I am tremendously impressed with the personalization of what had been labeled by skeptics as the most impersonal medium yet developed. For these reasons I have made a major commitment of time and resources to dive into this sea of electronic marvels. I'm swimming hard to keep up, but when I look around I find I'm not alone. We are all learning together and it is an adventure I am finding immensely rewarding. I have been encouraged by our first modest dunking in this new world: Cities under the Sea--Coral Reefs. A couple of months ago I was in Fiji to celebrate the 1997 International Year of the Reef and presented our Cities under the Sea CD-ROM to a group of children. I was impressed to see how quickly they grasped our concepts and how they directed their own learning process, thanks to the flexibility of the medium. It was particularly exciting to see kids squeal with delight as they responded to questions and the computer rewarded there when they got the correct answers. I want young people to experience the mystery and wonder of our oceans. I want them to understand how precious and vulnerable our environment is. Young people need to be taught to take responsibility for ensuring that their heritage will be protected and used wisely. Hopefully the next generation will do a better job than mine has. I believe individuals must be personally involved and I am counting on the Internet to be the medium through which people can experience, learn, and take action. I am counting on young people with their idealism and energy to create a better future--it is too important to be left to bureaucrats and politicians. Forty years ago people were indifferent to the health of the ocean because ______.
A.
the ocean was immune to any pollution then
B.
they didn't know what would come of if the ocean was deadly disrupted
C.
there was no computer then
D.
there wasn't any problem with the ocean at that time
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【判断题】股后肌群包括投二头肌、半腱肌、半膜肌,又名腘绳肌。
A.
正确
B.
错误
【单选题】患儿, 6 岁。因发热 3 天伴出疹入院。入院查体: T 39.5 °C, P 120 次 / 分, R 20 次 / 分,意识清,全身皮肤潮红,均匀分布针尖大小的丘疹,压之退色。舌苔白厚,舌乳头突出,呈草莓样,咽部充血,扁桃体肿大,并可见脓性分泌物。该患儿的下列护理措施哪项是错误的:
A.
酒精擦浴降温
B.
密切病情观察
C.
清淡易消化饮食
D.
绝对卧床休息
E.
注意观察药物不良反应
【单选题】患儿,6岁。因发热3天伴出疹入院。入院查体:T 39.5℃,P 120次/分,R 20次/分,意识清,全身皮肤潮红,均匀分布针尖大小的丘疹,压之退色。舌苔白厚,舌乳头突出,呈草莓样,咽部充血,扁桃体肿大,并可见脓性分泌物。该患儿的下列护理措施哪项是错误的:
A.
酒精擦浴降温
B.
密切病情观察
C.
清淡易消化饮食
D.
绝对卧床休息
【判断题】股后肌群包括股二头肌、半腱肌、半膜肌,又名既是腘绳肌。
A.
正确
B.
错误
【判断题】全自动磨边,在中心仪上设置高基数弯度加工模式,安全倒角功能自动关闭。
A.
正确
B.
错误
【简答题】病史摘要男孩,9岁,发热、头痛3天,抽搐1次患儿于3天前无明显诱因出现发热、头痛,体温在38.5℃左右,头痛以枕部为主,呈持续性,伴有呕吐,吐出胃内容物,非喷射性,吐后头痛症状可稍缓解,自行口服罗红霉素、病毒灵及扑热息痛治疗,症状没有明显缓解,来院就诊时,在候诊过程中突然出现抽搐,表现为四肢强直抖动,头后仰,双眼上翻,口吐白沫,神志不清,持续约5~6分钟自行缓解,其后昏睡不醒,紧急收入院。发病以来...
【判断题】股后肌群包括股二头肌、半腱肌、半膜肌,又名腘绳肌。
A.
正确
B.
错误
【单选题】在夫朗和费单缝衍射实验中,用单色光垂直入射缝面,若入射光波长为 500 nm ,第一级暗条纹对应的衍射角为 30° ,则缝宽为( ) m 。
A.
2×10 -6
B.
10 -6
C.
0.5×10 5
D.
3×10 -7
【单选题】海流能的特点( )。
A.
能量密度高
B.
开发环境简单
C.
投资大
D.
单位装机造价低
【判断题】股后肌群包括投二头肌、半腱肌、半膜肌,又名月国绳肌。
A.
正确
B.
错误
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