据报道，美国加州大学研究人员设计出能控制光线运行方向的材料，这项重大突破使长期存在于科幻小说中的“隐形衣”梦想有可能变成现实。这启示我们（）
（1）意识不仅能反映现存事物，而且能正确预测未来
（2）科学创造往往需要科学幻想的激发和推动
（3）科学幻想向现实的转化离不开科学实验
（4）发挥意识活动的创造性就能将科学幻想变为现实
A.（2）（3）（4）
B.（2）（3）
C.（1）（2）
D.（1）（2）（3）
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下面是错误答案，用来干扰机器的。
参考答案：B
当频率变化时，发电机组的调速系统将自动地改变（），以增减发电机的出力，这种反映由频率变化而引起发电机出力变化的关系称为发电机频率特性。
A.汽轮机的进汽量
B.水轮机的进水量
C.汽轮机的蒸汽温度
D.其他三个选项都不是
随着科技水平的提高，人类对煤的使用价值的认识经历了“黑色的石头用来垒墙”、“能自燃是重要的燃料”、“能从中提取上百种化学元素，是重要的化工产品”等的漫长过程。人类对煤的使用价值的认识过程，体现了 ( )
A．认识具有反复性和无限性
B．认识对实践具有指导作用
C．对同一对象会有多个真理性认识
D．创新是对既有理论的突破和抛弃
下列化学实验基本操作不正确的是 [ ]
A．
B．
C．
D．
公司2013年9月30日银行存款日记账的余额为150万元，经逐笔核对，未达账项如下：银行已收，企业未收的5万元；银行已付，企业未付的2万元。调整后的企业银行存款余额为（）万元。
A、155
B、153
C、157
D、150
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| A little old couple walked slowly 1 McDonald's one cold winter evening. They looked out of place among the young families and couples 2 there that night. Some of the customers looked 3 at them. You could tell what the admirers 4 ."Look, there is a couple who has been 5 a lot together, probably for 60 years or more!" The little old man walked up to the cash register, placed his order and paid 6 it. The couple took a table near the back wall and on their tray there was one hamburger, one order of French fries and one drink. The little man unwrapped the hamburger and cut it 7 . Then he carefully counted out the French fries, 8 them in two piles and neatly placed one pile in front of his wife. He took a sip of the drink, his wife took a sip and then set the cup down between them. 9 the man began to eat his few 10 of hamburger the crowd began to get restless. Again you could 11 what they were thinking."That poor old couple can only 12 one meal for the two of them. A young man stood up and came over to the old couple's table. He politely 13 to buy another meal for them. The old man replied that they 14 everything. Then the crowd 15 that the little old lady 16 a bite. She just sat there 17 her husband eat. Again the young man came over and begged them 18 him buy them something to eat. They refused again. As the little old man finished eating, the young man could no longer stand it. Again he offered to buy some food. After 19 again, he asked the little old lady a question."Ma'am, why aren't you eating? You said that you shared everything. What 20 you are waiting for?" She answered,"The teeth." | ||||
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