问题 解答题

结合所学的知识,判断正误.

(1)维生素既参与构成人体细胞,又能为人体提供能量.______

(2)有“虫眼”的水果农药含量少.______

(3)用鼻呼吸比用嘴呼吸好.______

(4)胸围差是指吸气时的胸围长度减去呼气时的胸围长度的差值.______

(5)房屋装修后,过一段时间再居住较好.______.

答案

(1)、维生素既不参与构成人体细胞,也不为人体提供能量,在人体内含量很少,但作用却很大,能够增强人的抵抗力.故错误.

(2)、有“虫眼”的水果或是蔬菜,并不是没有农药或是农药含量少,可能是虫子对这种农药产生了抗药性,这种农药对虫子根本不起作用;还可能是水果或是蔬菜被虫子“咬”过后才喷撒的农药.所以有“虫眼”的水果农药含量少是错误的,这是食品食用的一个误区.故错误.

(3)、人体的鼻腔的前部生有鼻毛,可以阻挡空气中的灰尘;鼻腔的内表面的鼻黏膜上的腺细胞能够分泌黏液,能使吸入的空气清洁并变得湿润;黏膜中还分布有丰富的毛细血管,对进入的空气有温暖作用.这样就减少了寒冷、干燥和不洁的空气对肺的刺激,有利于人体健康.如果用口呼吸则会使喉咙干燥同时会产生咳嗽,这是干燥的空气损伤气管的表现.故正确.

(4)、胸围差是指尽力吸气时的胸围长度减去尽力呼气后的胸围长度的差值.故错误.

(5)、房屋装修,装修或是装饰材料内往往含有有害气体.例如,人造材料、各种油漆、涂料、粘合剂以及家具等,其主要污染物是甲醛、苯、二甲苯等有机物和氨、一氧化碳、二氧化碳等无机物;还有如大理石等建材中,往往含有放射性的污染源,这些都对人体有害,所以房屋装修后要过一段时间后在搬进去住为好,让装修材料中的有机化合物扩散,防止对人体造成危害.故正确.

故答案为:(1)、×

(2)、×

(3)、√

(4)、×

(5)、√

阅读理解

Laura Brent is a manager in an important company. She has three children—the eldest is 10, and youngest is three. “My job was only possible because my husband David was prepared to take my place and become a house husband,” she says.

More and more couples are finding this arrangement suits them better in today’s world, where women are rising to the top of their careers faster and more easily than they did in the past. Many men, on the other hand, like the idea of staying at home and looking after the children. “My children see a lot more of me than I saw of my father when I was young, and I think it’s better for them, especially for the boys,” says David. “It works just as well for Laura.”

“Now I can come home from a hard day at work, and immediately relax with the children, instead of having to do the housework and the cooking,” she says.

Is there anything David misses about going out to work?

“Not really. I suppose the worst thing about looking after children and doing the housework is not having a lunch break! It’s a lot harder than most men think.”

小题1:How many people are there in Laura’s family?

A.2.

B.3.

C.4.

D.5小题2:Who does most of the housework in the family?

A.Laura.

B.David.

C.The children.

D.David’s parents.小题3:What does Laura usually do after coming back from work?

A.Cook for the family.

B.Take children from school.

C.Take a good rest with the children.

D.Wash dishes and sweep the floor.小题4:What does David think of his job at home?

A.Hard.

B.Easy.

C.Boring.

D.Fun小题5:One of the reasons why men choose to stay at home is that______.

A.children hate to stay with their mothers

B.men are better at looking after the children

C.women do better at work than they did before

D.children want their fathers to help them with the homework

单项选择题 A1/A2型题