同周期的X、Y、Z三种元素,已知其最高价氧化物对应的水化物的酸性强弱顺序是:HX

题型:选择题

问题:

同周期的X、Y、Z三种元素,已知其最高价氧化物对应的水化物的酸性强弱顺序是:HXO4>H2YO4>H3ZO4,则下列各判断中正确的是

A.原子半径:X>Y>Z

B.单质的非金属性:X>Y>Z

C.气态氢化物稳定性:X<Y<Z

D.原子序数:X<Y<Z

考点:构成物质的粒子—分子、原子、离子元素周期律
题型:选择题

妊高征最常见的严重并发症为()

A.前置胎盘

B.胎盘早剥

C.脑出血

D.急性肾功能衰竭

E.子痫

题型:选择题

用于外感风热所致的急喉痹、急乳蛾的是()

A.复方鱼腥草片

B.锡类散

C.黄氏响声丸

D.玄麦甘桔颗粒

E.口炎清颗粒

题型:选择题

I was 230 pounds this spring and I decided to get down to a healthier 200.In a house full of food,including snacks bought for my 7­year­old sons,I had a hard time cutting calories. Then I noticed my neighbors were having diet meals (减肥餐).I decided to do the same,knowing I would never be able to stick to a diet if I had to do the buying and cooking myself. I was looking for food that I could afford but I might take a diet more seriously if it hurt me in the wallet.

After online searches,I decided to compare the offerings of four companies:Zone Manhattan,Chefs Diet,Nu­Kitchen and eDiets. All four would send the meals to my door. Three send food daily,while eDiets sends a large package once a week. There were dozens of companies I could have chosen.Research suggests that the economic crisis has made diet programs less tempting.Consumers prefer do­it­yourself diets with foods bought from the supermarket.

Nu­Kitchen regards itself as the “personal chef”.I ordered the five­day plan ($230.53) and the taste was disappointing. I neither lost nor gained weight on the food.

eDiets promises “healthy,delicious meals sent to your door”.I ordered five breakfasts,five lunches and five dinners. My total cost was $119.70,or less than $25 a day. Overall,the food from eDiets was better than that from Nu­Kitchen.

Chefs Diet charged $380.99 for seven days,making it the most expensive of the four services.I never tasted anything terrible,but I never tasted anything that made me want to renew for a second week.

Zone Manhattan charged $349.80,with tax,for a week’s supply of food,or about $50 a day.I liked the food so much that I lost six pounds in the first four days on the diet.

小题1:When the author began to have diet meals,she________.

A.was 200 pounds

B.didn’t have any children

C.worked as a cook in a company offering diet meals

D.didn’t believe she could stick to a diet if she had to cook herself小题2:What does the underlined word “tempting” in Paragraph 2 mean?

A.Attractive.

B.Expensive.

C.Delicious.

D.Useful.小题3:Which of the four companies’ food cost the least daily?

A.Zone Manhattan’s.

B.Chefs Diet’s.

C.Nu­Kitchen’s.

D.eDiets’.小题4:We can learn from the passage that________.

A.the author gained weight on the food from Nu­kitchen

B.the author would choose the food of Zone Manhattan

C.the food from eDiets was the worst of the four

D.Zone Manhattan sends food once a week

题型:选择题

患者男性,52岁,吸烟史31年,近1个月咳嗽,咳痰带血丝,查体见左上肺局限性哮鸣音,该患者的诊断最可能是

A.支气管哮喘
B.支气管肺炎
C.支气管扩张症
D.左上肺癌
E.急性左侧心力衰竭

题型:选择题

注明项目目标、工作内容、交付时间以及最终产品的文件是下列哪一个?()

A.项目章程

B.产品说明书

C.范围说明书

D.WBS

更多题库