用某天平称量5.0g的物品,称量结果为4.8g,则此次称量的相对误差为()%。 A.

题型:单项选择题

问题:

用某天平称量5.0g的物品,称量结果为4.8g,则此次称量的相对误差为()%。

A.2;

B.96;

C.4;

D.4.2。

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题型:单项选择题

Almost every Chinese person can recite 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, News One Plus One, 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? According to the UN World Food Program, there were 925 million hungry people around the world in 2010, especially in developing countries. Six million children die of hunger every year.

Chinese people are well known for being generous(慷慨的). 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. Last November, Li Hong, a waitress in a restaurant in Nanjing, got fired(开除) because she took some leftover(剩余的) food home for her son. Many people stood by her side and agreed that it was not right to waste food.

What should we do in our daily lives to waste less food? Here are some tips:

1. Do not order(点菜) too much in a restaurant. Only order what you want to eat. If you cannot eat all the food you ordered, take the rest of it home.

2. Don’t be too picky(挑剔的) about food. Some food may not taste great, but your body needs it.

3. Keep an eye on what food you have at home. Don’t buy too much, especially for vegetables and fruit.

根据短文内容,选择最佳选项,将其标号在答题卡上涂黑。(每小题2分,共10分)

小题1:According to the CCTV program, Chinese people ___________.

A.save food enough to feed 200 million people for a year

B.throw away lots of food every year

C.get enough food to feed millions of people every year

D.have to feed 200 million hungry people every year小题2:From the third paragraph, we know that ___________.   

A.we have too much food to feed people in the world

B.there were 925 million people in developing countries

C.because of hunger, six million children die every year

D.there are only a few people getting hungry every year小题3:From the fourth and fifth paragraphs, we can learn about that___________.

A.all Chinese people are generous

B.Chinese people always waste food

C.Li Hong got fired because she wasted food

D.everyone should get into the habit of saving food小题4:What should we do to save food in our daily lives?

A.When we order too much food in a restaurant, just take the leftover food home.

B.Eat more food that doesn’t taste great.

C.We should not buy vegetables and fruit.

D.We should keep an eye on the food we like.小题5:What’s the main topic of the passage?

A.Don’t waste food.

B.Many people die of hunger.

C.Don’t be picky about food.

D.Eat all the food you order.

题型:单项选择题


1998年5月中国某粮油进出口公司A与欧洲某国一商社B订立出口大米的合同。该合同规定:大米规格水分最高20%,破碎率20%,杂质最高1%,以中国商检局的检验报告为最后依据。单价为USD360/MT,FOB中国一港口,麻袋装,每袋净重50KGS,买方应于1998年9月派船接运货物。B公司未按期派船接运货物,一直延误到12月才派船接运货物。大米装船交货,承运人签发清洁提单,运到目的港后,买方发现大米生虫。于是委托当地的货物检验机构进行检验,并签发了虫害证明。买方B公司据此向卖方A公司提出索赔20%货款。当A公司接到B公司的索赔后,不仅不赔,而且要求B公司支付延迟装货的仓储费等。另保存在中国商检局的检验货样,到发生争议时仍完好无损,未发生虫害。
试分析:

A公司要求B公司支付延迟装货的仓储费等能否成立为什么

题型:单项选择题

镀锌钢绞线拉线截面不应大于()mm。

A、70

B、35

C、50

D、25

题型:单项选择题

____为花粉粒的发育提供营养。

A.绒毡层

B.花粉管

C.花柱

D.花粉囊

题型:单项选择题

有效证件一般应具有()等信息。

A.姓名

B.号码

C.发证机关

D.发证日期

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