经过一段时间的化学学习，我们能从化学的视角去看物质，感受化学_爱下问搜题

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问题填空题

经过一段时间的化学学习，我们能从化学的视角去看物质，感受化学的重要。

水是生命之源，而无色透明的液态水从微观角度看是由构成的。将液态水加热变成水蒸气发生的是变化（填“物理”或“化学”），而将水通电生成氢气发生的是变化（填“物理”或“化学”），这两个变化的本质区别是。

水通电的文字表达式，电解水时，与电源正极相连的管内产生气，与电源负极相连的管内产生气，二者的体积比为：。

答案

水分子物理化学是否有新物质生成水氢气+氧气氧气氢气 1:2

题目分析：从微观角度看，水是由水分子构成的；液态水变成水蒸气只是水分子间的间隔发生了改变，水分子本身并没有发生变化，属于物理变化，水在通电的情况下生成了氢气和氧气，有新物质生成，属于化学变化，以上两种变化的本质区别是看是否有新物质生成；电解水时与电源正极相连的管内产生的是氧气，与电源负极相连的管内产生的是氢气，二者的体积比为1:2。

填空题

Questions 9-18

·Read the following article and answer questions 9-18 on the next page.

Apples: The Live Longer Fruit

0. Apples have been a product of healthy eating for many years, and the often-repeated line of an apple a day keeping the doctor away is far from a myth. Apples really do have a wonderful variety of nutritional benefits, and are a tasty addition to any diet of good health and longevity. Below is a list of the top five benefits of making apples a standard part of your daily diet.
1. Pectin (果胶) is a source of dietary fiber and a very handy nutrient to have in one’s diet. While it is also found in oranges, plums, and other fruits, apples have the highest concentration of them all. Pectin works to increase the stool’s volume and resistance of fluids and is therefore helpful in treating constipation, diarrhea, and generally improving the health of the bowels (肠) .
2. A study on nutrition and heart disease found that eating three apples a day for three months can help you to drop your cholesterol by at least 20 points. How does this happen Apple pectin, that miraculous source of dietary fiber, helps to draw bad LDL cholesterol out of the system. Not only that, but the antioxidant quercetin(栎皮酮)that is found in apples inhibits the LDL cholesterol from even accumulating in the body’s bloodstream.
3. The high amounts of quercetin, other flavonoids (类黄酮) , and phytochemicals (植物化学因子) found in this fruit deliver potent antioxidant activity to all who eat an apple, and with that inhibit the actions of free radicals. In addition, the phytochemicals may act against cancer-causing substances, which will likewise help to prevent cancer. This means that apple eating prevents cancer of the prostate (前列腺) and lung, as well as other parts of the body.
4. There may have been many generations of explorers that sought the fountain of youth, but all they had to do was fight the daily stresses of life with a tasty apple! The phytochemicals that come from the bright colors you find in the skins of your favorite apple variety, along with aiding the apple’s ability to lower cholesterol and fight cancer, also inhibits the onset of diabetes, high blood pressure, heart disease, and other conditions that lead to potentially weakening situations in old age.
5. If keeping a full head of hair will help you to age more gracefully, then chow down on some apples. Chinese medicine considers hair loss to be a sign of a reduced kidney essence, and apples are on the list of fruits and vegetables that will help you to restore this essence and nourish the blood that flows to your hair follicles (毛囊) .

Questions 9-13

·For questions 9-13, choose the best title for each paragraph from the box below.
·For each numbered paragraph (1-5). mark one letter (A -G) on the Answer Sheet.
·Do not mark any letter twice.

A. Apples lower cholesterol.
B. Apples benefit young and old.
C. Apples slow the aging process.
D. Apples reduce the risk of cancer.
E. Apples help to prevent hair loss.
F. Apples enrich people’s diet.
G. Apples improve the bowels.

Paragraph 1: ______

多项选择题

甲单位是实行国库集中支付的行政单位，2014年3月，审计机构对甲单位2013年度预算执行情况进行检查，了解到以下情况：

（1）2013年3月，甲单位通过零余额账户向下属单位转账，为下属单位支付设备采购款100万元。

（2）2013年4月，甲通过零余额账户向本单位按照账户管理规定保留的相应账户划拨工会

经费1万元。

（3）2013年8月，甲单位为采购一台精密仪器A设备以邀请招标的方式向2家设备供应商发出招标邀请书。甲单位未认真审核供应商资质，直接选择了报价低的供应商B企业，但B企业不具备生产该类精密仪器的资质而且财务情况混乱，未中标供应商C企业向甲单位提出了质疑，但甲单位不予以答复。政府采购监管部门接到C企业投诉后对甲单位进行调查，发现甲单位未按照规定保管该项采购活动的采购文件。

要求：根据上述资料，回答下列问题。

下列各项关于预算单位使用零余额账户的情形中，正确的为（）。

A.通过零余额账户向所属下级单位账户划拨资金.为本单位支付设备采购款

B.通过零余额账户向所属下级单位账户划拨资金，为下属单位支付设备采购款

C.通过零余额账户向本单位按账户管理规定保留的相应账户划拨工会经费

D.通过零余额账户向本单位按账户管理规定保留的相应账户划拨住房公积金及提租补贴