科目:初中英語 來源:2020年6月江蘇省常州市九年級第二次教學情況調(diào)研測試(二模)英語試卷 題型:話題作文
自律, 即自我約束, 是自我提升的一種途徑, 有助于我們成長, 促使我們不斷前行。某英文網(wǎng)站正在開展以"自律"為主題的征文活動。今年因為疫情, 我們過了一個超長寒假, 在寒假里我們停課不停學, 談談假期里你是如何自律的。你做過什么, 以及這樣做給你帶來的好處。
學習方面 | 1. 制定學習計劃, 養(yǎng)成早讀語文和英語的習慣 2. 按時上網(wǎng)課, 復習所學內(nèi)容, 及時上交作業(yè) |
身體方面 | 1. 每天鍛煉…… 2. 保持健康的飲食結構……. |
帶來的好處 | 1. 現(xiàn)在各門學科都進展順利 2. … |
要求:必須包括所有要點并適當補充, 語句通順, 意思連貫:字數(shù):100詞左右
When the winter holiday came to an end, we didn't go back to school. We had o take online courses at home because of the novel coronavius outbreak. So self-discipline (自律) plays an important role in our life.
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科目:初中英語 來源:2020年山東省濟南市章丘區(qū)中考三模英語試卷 題型:單選題
— I don’t know tomorrow.
— You can ask our teacher right now.
A.if we take the bus there B.when will we leave
C.what will we do D.how we will go there
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科目:初中英語 來源:2020年山東省濟南市章丘區(qū)中考三模英語試卷 題型:單選題
Could you please put some _________ in my cup? I’d like sweet coffee.
A.sugar B.salt C.ice D.pepper
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科目:初中英語 來源:2020年山東省濟南市章丘區(qū)中考三模英語試卷 題型:單選題
There will be heavy rain and strong wind next ___________ / wi:k /.
A.week B.wait C.west D.weak
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科目:初中英語 來源:2020年山東省濟南市章丘區(qū)中考三模英語試卷 題型:聽錄音選擇聽到的句子
A.What are the stamps used for?
B.Let’s come up with some good ideas.
C.Have you ever been late for school?
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科目:初中英語 來源:2020年北京市西城區(qū)中考二模英語試卷 題型:閱讀單選
Bacterial Quorum Sensing
Bacteria(細菌)play an important role in our lives. They can keep us alive as well as make us sick. It wasn’t until fairly recently that we learned bacteria can communicate with one another.
In the 1960s, researchers found that a kind of bacteria called Vibrio fischeri(費氏弧菌) produced no light when they were alone, but that they exhibited great amount of light as the bacterial population grew to a certain number. How did this happen? How can Vibrio fischeri tell the difference between times when they’re alone and times when they’re in a community, and then all do something together?
Researchers found they talk to each other with a chemical language—signal molecules(信號分子). Vibrio fischeri makes signal molecules, and it also has a receptor on its surface that fits like a lock and key with a signal molecule. As the bacteria increase, more and more signal molecules are sent into the environment. When signal molecules increase to a certain amount, they lock down into those receptors and information comes into the bacteria, which tells them how many neighbors there are. As soon as they realize the population has hit the certain number, all of the bacteria behave as a group, making light together. In the past ten years, researchers have found all bacteria have systems like this: they make and recognize chemical words, determine(判斷)the size of the community, and carry out tasks that would be unsuccessful if a single one were to act alone. This process is called quorum sensing.
Most of the time, bacteria live with thousands of other species (種類)of bacteria. There has to be a language of interspecies communication. In fact, bacteria have another kind of signal molecule, which is the common language used by all species. Moreover, this kind of molecule has its own receptor. In this way, bacteria are able to count different populations, and then they decide what task to carry out depending on which species has the greatest population.
Knowing how bacteria communicate could influence how we fight disease. What if bacteria can’t talk or hear? They won’t recognize when there are enough bacteria and when to exhibit the group behavior to make us sick. Researchers are developing a method—to make molecules that look like the real ones and then they lock into the receptors to jam recognition of the real situation.
On the other hand, researchers also improve the conversation of the beneficial bacteria, so they can do things that we want them to do better than they would do on their own.
1.According to the passage, what can we learn about quorum sensing?
A.Quorum sensing may happen when there is only one Vibrio fischeri.
B.Signal molecules are kept away from receptors during quorum sensing.
C.Most bacteria have similar systems to make light during quorum sensing.
D.Bacteria carry out a group task when their population hit a certain number.
2.What can we learn from the passage?
A.The more species there are, the more group actions bacteria will take.
B.In different environments, bacteria have different interspecies languages.
C.Beneficial bacteria communicate better by themselves than harmful ones.
D.To fight disease, researchers try to turn off the communication between harmful bacteria.
3.The passage is mainly about ________.
A.why bacterial population grows B.how bacteria communicate with each other
C.which bacteria help fight disease D.what scientists do to find quorum sensing
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科目:初中英語 來源:湖南省2017-2018學年八年級上學期期末英語試卷 題型:語篇翻譯
Here's all of the information you need to write on your party invitation. If it shows all of the facts about your party, 1.客人們將會覺得更容易做決定。They will be clear about if they can accept it or they have to turn it down.
The first thing you should put on your invitation is the name of the party host and the theme (主題) of the party. Your invitation should show the type of the party to the persons that you want to invite.
2.The next is the place where the party will be held. If your guests don't know about the address of the party, they may check the way to go without getting lost.
3. Clearly write the time of your party, with both date and day of the week. After checking the calendar, the guests will know if they are available on that day. 4.Your invitation also needs to tell your guests what time to arrive and how long the party will last (持續(xù)).
If you want your guests to reply to your invitation as soon as possible, you can give them a date by which you'll need an answer. 5.并且告訴他們一個電話號碼或者一個電子郵箱地址 so that they can let you know.
1.______________________________________________
2.______________________________________________
3.______________________________________________
4.______________________________________________
5.______________________________________________
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科目:初中英語 來源:2020年吉林省長春市汽開區(qū)中考一模英語試卷 題型:根據(jù)句意填空
The little girl has a high _____________, she should be sent to hospital right away.
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