I know what you’re thinking : pizza? For

题型:阅读理解

问题:

I know what you’re thinking : pizza? For breakfast? But the truth is that you can have last night’s leftovers in the a. m. if you want to.

I know lots of women who skip breakfast , and they have a ton of different excuses for doing it . Some say they don’t have time. others think they’re “saving” calories, still others just don’t like breakfast food . 

But the bottom line is that eating in the morning is very important when you’re trying to lose weight. “Eating just about anything from 300 to 400 calories would be better than nothing at all,” says Katherine Brooking , R , D , who developed the super-easy eating plan for this year’s “SELF CHALLENGE”. And even pizza can be healthy if it’s loaded with vegetables, and you stick to one small piece. 

Breakfast is one meal I never miss, and the same goes for most weight loss success stories. Research shows that eating breakfast keeps you from overeating later in the day. Researchers at the University of Southem California found that breakfast skippers have a bigger chance of gaining weight than those who regularly have a morning meal. 

So eat something in the morning, anything. I know plenty of friends who end up having no breakfast altogether, and have just coffee or orange juice. I say, try heating up last night’s leftovers-it may sound crazy, but if it works for you, do it! I find if I tell myself, “You can always eat it tomorrow,” I put away the leftovers instead of eating more that night. Try it…you may save yourself some pre-bedtime calories. And watch your body gain the fat-burning effects. 

小题1:The word “leftovers” in Paragraph 1 probably means__________.

A.things left undone

B.food remaining after a meal

C.meals made of vegetables

D.pizza topped with fruit小题2:What can we infer from the text?

A.Working women usually have breakfast in a hurry.

B.There are some easy ways of cooking a meal.

C.Many people have wrong ideas about breakfast.

D.Eating vegetables helps save energy.小题3:According to the last paragraph, it is important to____________. 

A.eat something for breakfast

B.put away the leftovers instead of eating more.

C.heat up leftovers for breakfast

D.eat calorie-controlled food小题4:The text is written mainly for those_____________. 

A.who go to work early

B.who stay up late

C.who want to lose weight

D.who eat before sleep

考点:健康环保类阅读
题型:阅读理解

(18分)硫酸亚铁铵晶体俗名为摩尔盐,化学式为xFeSO4·y(NH4)2SO4·zH2O,在制药、电镀方面有广泛的应用。

资料: ①硫酸亚铁铵晶体易溶于水,不溶于乙醇;

②相关物质的溶解度(单位:g)如下表:

温度/℃FeSO4(NH4) 2SO4xFeSO4·y(NH4)2SO4·zH2O
1020.07317.2
2026.575.421. 6
3032.97828.1
      ③硫酸亚铁铵晶体受热时,在200℃以下只有结晶水失去。

【探究一】:制备硫酸亚铁铵晶体

某兴趣小组的学生用含有少量铜的废铁屑制备硫酸亚铁铵晶体,流程如下:

(1)在盛有废铁屑的容器中,倒入热水和洗涤剂,充分搅拌。以除去废铁屑表面的油污,这是利用洗涤剂的     作用;

(2)操作①中发生反应的化学方程式为     

(3)过滤所需的玻璃仪器有烧杯、玻璃棒、     。过滤操作中滤纸有多种折法,为了加快过滤速率,你选择折法是     

         

(4)操作①中过滤时,要趁热进行的原因是    ,过滤后得到的固体中一定含有的物质是    

(5)操作②的目的是得到硫酸亚铁铵晶体。操作顺序是b→          →d;

a.过滤        b.加热浓缩        c.冷却结晶        d.洗涤干燥

(6)操作②中使用乙醇洗涤,可快速晾干。这样做的优点是     

A、避免用水洗涤所造成的晶体损耗

B、酒精易挥发,可低温晾干晶体

【探究二】:探究硫酸亚铁铵的组成

【实验步骤】:取2份等质量的硫酸亚铁铵晶体,分别进行实验。向一份中加入过量的NaOH溶液,充分反应后得到0.68gNH3;向另一份中加入过量的BaCl2溶液,充分反应后过滤、洗涤、干燥得到9.32g沉淀。

回答下列问题:

(7)实验中生成的NH3能使湿润的     变蓝;写出(NH4)2SO4与NaOH反应的化学方程式     ,属于     反应;

(8)实验中加入过量BaCl2溶液的目的     

(9)取最后一次洗涤液,加入Na2SO4溶液,     ,则说明沉淀已经洗涤干净;

(10)根据实验数据,计算x 和y的比值(2分,写出计算过程;相对分子质量:NH3-17、BaSO4-233)

     

为进一步确定硫酸亚铁铵晶体的组成,另取7.84g硫酸亚铁铵晶体,并加热使其分解,剩余固体质量与温度的关系如图所示。则:

(11)根据图示数据,硫酸亚铁铵晶体中,

x:y:z =       

(12)写出A点到B点发生反应的化学方

程式     

题型:阅读理解
4÷6的商是(  )
A.有限小数B.无限不循环小数
C.无限循环小数
题型:阅读理解

人体内合成尿素的主要脏器是

A.心

B.肝

C.脑

D.肾

E.脾

题型:阅读理解

某公司出口一批皮夹克(检验检疫类别为M/N),请根据所提供的单据,判断填制“出境货物报检单”各项内容的正误,完成判断题136~150题(见报检单上标注的题号)。

 

题型:阅读理解

出租汽车座椅应牢固无塌陷,前排座椅可前后移动,倾度可调。

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