3. As we all know,metals e when they are heated.
金钥匙试卷系列答案科目：高中英语 来源： 题型：
Task I. Read the text and fill in the blanks in the chart.
1.2.3.4.5.6.7.8.9.10.11.12.13.
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科目：高中英语 来源： 题型：
A few months ago,when I was reading a story to my 4-year-old granddaughter,she looked away and said that my breath was terrible. I didn't think much of it until it happened again the next week,and it wasn't long after I had brushed my teeth.
I've always kept up with oral hygiene(口腔卫生) ，so bad breath wasn't something that plagued me. I didn't notice it myself,but I asked my dentist about it soon after. According to him,bad breath is very common among old people. One of the major problems is that less saliva (唾液) is produced as we get older,which helps clean our mouth.
In the past,V ve used plenty of products that I thought would help with bad breath,but I didn't understand the real problem. Most ordinary mouthwashes that promise to kill bacteria(细菌) and give you fresh breath contain alcohol(酒精) They help fight bacteria,but it's only about an hour before your breath starts to stink(发臭) again. Even worse,the alcohol dries out your mouth,actually causing bad breath.
My dentist suggested an alcohol-free mouthwash. I did some research,and then tried a few products. SmartMouth Advanced Clinical Formula offered all of the advantages I was looking for,including a promise of 12 hours of fresh breath every time I used the product. It is alcohol-free,so it doesn ’t dry my mouth,but it still kills bacteria.
I knew SmartMouth was unusual because it was the only mouthwash on the shelf that came in a box,with two bottles inside. You combine the two in one cup right before using: that's what makes it so different from other mouthwashes. It does provide long-lasting fresh breath. This step “activates” the mouthwash,and the results speak for themselves. My granddaughter lovingly tells me that I'm no longer stinky.
1. While the author was reading to her granddaughter, .
A. a bad tooth was almost killing her
B. something was wrong with her breath
C. she kept making some stupid mistakes
D. she found the story was difficult to understand
2. The underlined word “plagued” in Paragraph 2
probably means “”
A. worried B. amazed
C. satisfied D. fooled
3. Different from most ordinary mouthwashes, SmartMouth.
A. is too expensive for the author
B. dries the author' s mouth quickly
C. does not contain any alcohol
D. comes with a big bottle inside
4. What does the author think of her dentist's suggestion?
A. She is doubtful of it.
B. She thinks it is helpful.
C. She thinks nothing of it.
D. She is uncertain about it.
5. What is the purpose of this text?
A. To tell an interesting story.
B. To report a research result.
C. To introduce a dentist.
D. To suggest a product.
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科目：高中英语 来源： 题型：
struggle既可作名词,也可作动词。
★作名词时，意为:①努力，奋斗;②搏斗， 扭打。
如：
The people of this country will continue in their struggle for independence.
After a short struggle,I managed to get the knife away from the thief.
★作动词时，意为:①努力,奋斗;②斗争, 抗争;③搏斗，扭打。
常用于以下结构: struggle for sth.为某事而斗争/奋斗
struggle to do sth.努力/争取做某事
struggle against / with sb. / sth.和某人/ 某事斗争
struggle with sb.与某人打斗
如：
Millions of people are struggling for survival.
The woman is struggling to bring up a family alone. 、、
John has struggled against / with cancer for two years.
James was hit in the mouth as he struggled with that man.
[即学即练]根据括号内的汉语提示补全
下面句子。
1. Although he was terribly injured,
he didn't give up(求生的努力）
2. I saw the shopkeeper(与那窃贼搏斗起来了 ) .
3. We must(与困难作斗争).
4. Don,t (努力控制你的感情) .
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