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Almost every Chinese person can recite(背诵) the two lines of the famous poem, “ Every grain on the plate comes from hard work ”. But sadly, many of us don’t actually get the real meaning of these lines: Don’t waste food. A CCTV program reported that the food Chinese people throw away every year is enough to feed 200 million people for a year. Do we have too much food? Absolutely not. According to the UN World Food Program, there were 925 million hungry people around the world in 2011, especially in developing countries. Six million children die of hunger every year. Chinese people are well-known for being friendly and generous. Many even feel that they lose face if their guests have eaten all the food on the table. Luckily, a number of people have realized the importance of saving food. What should we do in our daily lives to waste less food? 1. Don’t order too much in a restaurant. Only order as much as you want to eat. If you cannot eat all the food you ordered, take the rest of it home. 2. Don’t leave any food in your bowls while having meals. 3. Keep an eye on what food you have at home. Don’t buy too much, especially for vegetables and fruit. 小题1:What’s the real meaning of the underlined sentence? A.春种一粒粟,秋收万颗籽 B.谁知盘中餐,粒粒皆辛苦。 C.吏禄三百石,岁余粮 D.足蒸暑土气,背灼炎天光。 小题2:According to the UN report, how many hungry people were there in 2011? A.6 million. B.925 million. C.200 million. D.725 million. 小题3:What should we do to waste less food? A.Order more food in a restaurant. B.Every time you eat, leave some food in your bowls. C.Take all the food you ordered home. D.Don’t store too much food like vegetables and fruit. 小题4:Which of the following is NOT true? A.A number of people have realized the importance of saving food. B.The food Chinese people throw away every year is enough to feed 200 million people for a year. C.200 million children die of hunger every year. D.Many Chinese feel that they lose face if guests have eaten all the food on the table. 小题5:What’s the main idea of this passage? A.Don’t waste food. B.Chinese people are friendly and generous. C.We can’t die of hunger. D.Every grain is grown by farmers.
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【单选题】47)铜包钢承力索的机械强度安全系数不应小于( )。
A.
(A)2
B.
(B)2)5
C.
(C)3
D.
(D)4
【单选题】动态规划算法是20世纪50年代初美国数学家R.E.Bellman等人研究_______________的优化问题时,提出把多阶段过程转化为一系列单阶段问题,利用各阶段之间的关系,逐个求解,将多阶段过程求解加以优化的方法——动态规划算法。
A.
最优解
B.
多阶段决策过程
C.
最短路线问题
D.
最优库存管理
【判断题】若函数 在 左可导且右可导, 则 在 连续 .
A.
正确
B.
错误
【单选题】Mr. Brown caught several fish and then ________, which he thought was a good way to spend time.
A.
set it away
B.
set it free
C.
put them away
D.
set them free
【判断题】若 在 可导且导函数有界,则 在 一致连续 .
A.
正确
B.
错误
【单选题】若 在 可导,且 ,则( )
A.
对任意的 ,不一定能使
B.
至少存在一点 ,使
C.
一定不存在一点 ,使
D.
恰好在一点 ,使
【多选题】一旅游团定于下午16时乘火车离开济南,14时用完午餐后,旅游者要求去附近商场购物,地陪小王不想让游客去购物,但游客一再坚持,并保证40分钟后肯定回来,小王想购物点离火车站不远,于是就同意游客要求,但他强调了15时一定要在饭店门口集合前往火车站。14:40集合时少了2名游客,电话也打不通,小王让已到的旅游者上车休息,自己与全陪领队前往寻找,待找到是距离火车离站只有15分钟,司机开车赶过去后火车已离站...
A.
不应在离站前两小时的时候让旅游者去大商场购物
B.
不应组织三个人去寻找丢失者
C.
不应让已到的旅游者在车上等待
D.
不能让旅游者在饭店门口集合
E.
地陪不应让领队、全陪去寻找丢失者,应让他们带领旅游团去赶火车
【判断题】若 在 不可导, 在 可导,且 ,则 在 必不可导。( )
A.
正确
B.
错误
【判断题】若 在 不可导, 在 不可导,且 ,则 在 必不可导。( )
A.
正确
B.
错误
【单选题】A. Choose the best answer. 8. Mr. Brown caught several fish and then ________, which he thought was a good way to spend time.
A.
set it away
B.
set it free
C.
put them away
D.
set them free
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