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读“长江流域略图”及有关资料，回答下列问题． 材料1：你从雪山走来，春潮是你的，你奔去，惊涛是你的气慨…（摘自《长江之歌》） 材料2：长江三峡水利枢纽工程计划2009年整体完工，完工后可控制荆江地区百年一遇的特大洪水；总装机容量1820万千瓦，年发电量847亿千瓦/时，相当于10座大亚湾核电站；能改善宜昌到重庆的航道条件；能为长江中下游地区的城镇供水和农田灌溉用水提供保证． （1）长江发源于______山脉，自西向东注入______海，是我国第______大河． （2）长江素有“水能宝库”之称，水能主要集中在______（上/中）游河段，图中①是______水利枢纽，它建成后将是世界最大的水利枢纽，具有巨大的综合效益，它发挥的综合效益体现在哪些方面______（任意写出两方面）． （3）南水北调工程，是指把______水系的丰富水资源，通过引水工程调到我国缺水严重______、______地区．该工程分为______线、中线和西线三条调水线路．
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【简答题】Law 3 When two particles react, a pair of interacting forces come into existence; these forces have the same magnitudes and opposite senses, and they act along the straight line common to the two part...
【单选题】If two particles have equal momenta, are their kinetic energies equal?
A.
yes, always
B.
no, never
C.
no, except when their speeds are the same
D.
yes, as long as they move along parallel lines
【简答题】His student John must be (disappoint) ______ at this news·
【单选题】John is____student in his class.
A.
a bright
B.
a brighter
C.
the brightest
D.
the brighter
【简答题】The P-N junction is formed by two kinds of particles movement: _____________ and ____________.
【简答题】John Smith was a good math student at a high school. He loved his computer. He came home early every day. Then he worked with it till midnight. But John was not a good English student, not good at all...
【简答题】设有定义语句: char s[15]={"123ab\0abc"}; 则表达式 strlen(s) 的值为 。
【单选题】听力原文：M: The teacher called off the lecture. W: Oh, really? His student John must be disappointed at this news. Q: Who is John ? (5)
A.
Teacher.
B.
Nurse.
C.
Doctor.
D.
Student.
【单选题】If two particles have equal kinetic energies, are their momenta equal?
A.
yes, always
B.
no, never
C.
yes, as long as their masses are equal
D.
yes, if both their masses and directions of motion are the same
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