下列有关叙述正确的是( ) A.糖类和油脂都能为人体提供能量 B.人体缺钙易引起

题型:选择题

问题:

下列有关叙述正确的是(  )

A.糖类和油脂都能为人体提供能量

B.人体缺钙易引起食欲不振

C.合成纤维、塑料、合金等都属于合成材料

D.青少年生长过程需要大量蛋白质,所以要多吃水果

考点:六大营养素化学元素和人体健康合成有机高分子材料
题型:选择题

阅读理解。

      I had the meanest mother in the whole world. While other kids ate candy for breakfast, I had to have

porridge, eggs or toast. When others had Cokes and candy for lunch, I had to eat a sandwich. But at least

I wasn't alone when I was sad. My sister and two brothers had the same mean (刻薄的) mother as I did.

     My mother preferred to know where we were all the time. She had to know who our friends were and

where we were going. We had to clean clothes and take a bath every day. The other kids got to wear the

same clothes for days. We could not lie in bed "sick" in order to miss school. 

     The worst is yet to come. We had to be in bed by nine each night and get up at eight the next morning.

We couldn't sleep till noon like our friends. So while they slept, my mother was brave to break the Child

Labour Law. She made us work. We had to wash dishes, make beds, and learn to cook and all sorts of

things at home. I believe she lay awake thinking up all things for us to do. 

     My mother was a complete failure as a mother. Two of her children received higher education. None of

us have ever been arrested (taken away by the police) or divorced. She forced us to grow up into educated

and honest adults. I am trying to raise my three children this way. I am filled with pride when my children

call me "mean". Why? Because now I thank God every day for giving me the meanest mother in the world.

1. How many children does the writer's mother have?

A. Four.

B. Two.

C. Three.

D. Six. 

2. What can you infer (推测) from the passage?

A. My family was rich, so I ate a sandwich for lunch.

B. My mother was a great success. We love her.

C. If we didn't want to go to school, the best way was to pretend to be sick.

D. We needn't share the housework at home.

3. The best title for this passage may be _______. 

A. My childhood

B. The meanest mother

C. I do as my mother did

D. Unforgettable memories

题型:选择题

提高内燃机动力性能与经济性能的途径有()

A.采用增压技术

B.合理组织燃烧过程,提高循环指示效率

C.改善换气过程,提高气缸充量系数

D.以上都正确

题型:选择题

下列关于心电图的叙述,错误的是

A.反映心脏内兴奋产生、传导和恢复过程
B.P波代表两心房去极化过程
C.QRS波群代表两心室去极化过程
D.T波代表两心室复极化过程
E.P-R间期是由P波结束至QRS波开始之间的时程

题型:选择题

新生儿坏死性小肠结肠炎

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请分别介绍客户服务中心每月对客服代表进行定期考核的服务质量、工作质量、业务技能、劳动纪律四个方面的考核内容?

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