4. What is troubling him is he has a large bill to pay at the end of this month.
4. that根据语境和句子结构可知，is后面是一个表语从句，而表语从句中不缺少任何成分，因此用that。
题目来源：2015年全品作业本高中英语必修1外研版 > Module 4 A Social Survey-My Neighborhood
科目：高中英语 来源： 题型：
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(A) ，并在其下面写出该加的词。删除：把多余的词用斜线(\) 划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者(从第11处起) 不计分。
I will share with you a story happened a few days ago. One of my classmate bought a bag of snacks from a food store. A few roommates were then invited to enjoy snacks. Unluckily,all of them got poisoned and had stomach aches with our faces pale. They are quickly sent to a nearby hospital. Doctors examined them but gave them some medicine. They were out of dan?ger soon before taking the medicine. This accident should make us to realize the seriousness of the food safety problem. I strong suggest that the whole so?ciety pays more attention to food safety.
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科目：高中英语 来源： 题型：
8. My parents have been married for nearly twenty years,and they (never argue) with each other once.
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科目：高中英语 来源： 题型：
There are many interesting science experiments out there for young kids. You can surprise your friends and teachers with them. All you have to do is to put a little effort into it and you should have no problem coming up with an in?teresting science experiment. One such experiment is to show your friends and teachers that you can make mothballs (棒脑丸) dance!If you want to do it,first,be sure that you have got all the necessary sci?ence kits for your science experiment.
What you need for this experiment is a glass filled half full with water. Add a little bit of vinegar to your glass of water,about 1/3 or 1/4 of a cup (60 ml) ,and one teaspoon (10 ml) of baking soda,and then carefully stir the mix?ture. Drop a few mothballs into the glass and have your audience watch. As long as the surfaces of the mothballs become fairly rough,they should begin to bounce up and down in the glass.
You can also do a similar experiment with raisins (葡萄干) and clear pop,such as Sprite. In this experiment,all you have to do is to fill a glass with Sprite and drop a few raisins into it. The raisins should begin to bounce up and down in the glass of Sprite. You can also replace the raisins with mothballs and you should get the same effect in the Sprite. This project works because the irregular surfaces of the mothballs and the raisins hold some C02 bubbles (气泡) ，causing them to bounce up and down in a dancing motion.
1. The writer writes this passage to .
A. explain why some science experiments are easy
B. encourage people to spend more time on science
C. tell us how good he is at doing science experiments
D. teach kids how to do an easy and interesting science experiment
2. What is the most probable name of the experiment?
A. Producing mothballs.
B. Dancing mothballs.
C. Changing mothballs.
D. Swimming mothballs.
3. Which of the following things are needed in the experiment?
a. baking soda b. water c. mothballs
d. salt e. vinegar f. sugar
A. beef B. acde
C. abed D. abce
4. The underlined word "pop" in Paragraph 4 probably refers to a .
A. mothball
B. kind of vinegar
C. drink with bubbles
D. special kind of raisin
5. From the last paragraph we can know .
A. why Sprite has some C02 bubbles
B. what people usually use Sprite for
C. what scientists usually do with raisins
D. why the mothballs bounce up and down
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科目：高中英语 来源： 题型：
1. Don't worry. There is no e in the wire (电线) .So it is safe to touch it.
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科目：高中英语 来源： 题型：
5. ―Listen!There (the bell;go) . Let's hurry. ―Oh,yes. Has the teacher come yet?
―Look!Here (he;come) .
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