相關(guān)習(xí)題
 0  22442  22450  22456  22460  22466  22468  22472  22478  22480  22486  22492  22496  22498  22502  22508  22510  22516  22520  22522  22526  22528  22532  22534  22536  22537  22538  22540  22541  22542  22544  22546  22550  22552  22556  22558  22562  22568  22570  22576  22580  22582  22586  22592  22598  22600  22606  22610  22612  22618  22622  22628  22636  159627 

科目: 來源: 題型:

(4分)我國北方早春育苗常用溫床,電熱溫床是其中的一種。電熱溫床是這樣制成的:先將床土挖去約20cm厚,床底鋪一層麥秸或鋸末,再鋪一層塑料膜。將電熱線按10cm間距,均勻地鋪在塑料膜上,再把床土放回,這樣電熱溫床就做成了。
電熱溫床的溫控儀相當(dāng)于一個阻值隨溫度變化的可變電阻,利用它可以根據(jù)溫度自動控制通過電熱線的電流,從而實(shí)現(xiàn)溫床溫度的自動控制。使用時應(yīng)該把溫控儀與電熱線______聯(lián)。電熱線不能打結(jié)、交叉或重疊,否則可能由于______________________________而發(fā)生危險。這種方法是利用_______________獲得適宜幼苗生長的溫度。

查看答案和解析>>

科目: 來源: 題型:

原來室內(nèi)的電燈正常發(fā)光,當(dāng)把臺燈的插頭插入插座時(臺燈的開關(guān)斷開),室內(nèi)的燈全部熄滅,熔絲熔斷,發(fā)生這一現(xiàn)象的原因是( )
A.臺燈的功率太大B.臺燈的插頭處有短路
C.臺燈的燈座處有短路D.插座處原來就有短路

查看答案和解析>>

科目: 來源: 題型:

用粗細(xì)均勻的電熱絲加熱燒水,通電10 min可燒開一壺水,若將電熱絲對折起來使用,電源電壓不變,則燒開同樣一壺水的時間是( )
A.2.5 minB.5 minC.20 minD.30 min

查看答案和解析>>

科目: 來源: 題型:

Check again,           you’ll make fewer mistakes.
A.a(chǎn)ndB.or C.but D.though

查看答案和解析>>

科目: 來源: 題型:

— Did you have a good weekend?
          . I was busy studying for the test.
A.SureB.I think so C.I am afraid notD.I hope not

查看答案和解析>>

科目: 來源: 題型:閱讀理解

As an exchange student, I have been staying in a host family in Beijing for the past five months. The parents are   36  in their mid-30s and the son just turned 5. In exchange for room and board, I teach their son   37 .
Like in many of the other Chinese families, he’s an only child. And though he has   38 plastic trucks and boxes full of crayons, I don’t know   39  he has the time to play. When he’s not in the kindergarten, he’s taking after-school classes. On the weekends, the boy goes to more classes. He has one day off―Sunday.
Compared to his schedule, I feel like my childhood was   40  a waste of time. I learned how to climb trees and draw cartoons. I wasn’t learning Chinese at his age. But he and lots of other children are learning English. Both his parents dream that he will have   41  jobs, higher pay, and bigger houses.
The boy seems to take no interest   42  learning English. He doesn’t need a teacher, but a playmate. He is,   43 , only 5. When I think about my life as a 5-year-old, I know for sure I wasn’t half as   44  as he is.
In the evening, when his parents   45  him to speak with me in English, he gets   46 . He lies on the floors, hides under the table and climbs on the furniture. When he finally stops   47 , and starts talking, it isn’t in English, but it isn’t in Chinese,   48 . He speaks in his own language.
He   49  not be a very good student, but I’m not a great teacher. I just want to be his big brother   50  can speak in gibberish(胡言亂語) with him and help draw trucks, robots or spiders.
【小題1】
A.bothB.a(chǎn)llC.eitherD.none
【小題2】
A.drawingB.ChineseC.EnglishD.playing
【小題3】
A.a(chǎn) hundred ofB.hundreds ofC.hundred ofD.hundreds
【小題4】
A.whenB.whatC.whereD.that
【小題5】
A.hardlyB.neverC.usuallyD.a(chǎn)lmost
【小題6】
A.moreB.fewerC.betterD.worse
【小題7】
A.withB.inC.forD.on
【小題8】
A.a(chǎn)fter allB.a(chǎn)t allC.first of allD.a(chǎn)ll the time
【小題9】
A.busilyB.busiestC.busierD.busy
【小題10】
A.makeB.pushC.haveD.let
【小題11】
A.frustratedB.relaxedC.pleasedD.injured
【小題12】
A.moveB.to moveC.movingD.moved
【小題13】
A.tooB.a(chǎn)lsoC.a(chǎn)s wellD.either
【小題14】
A.canB.mayC.mustD.need
【小題15】
A.whoB.whomC.whoseD.which

查看答案和解析>>

科目: 來源: 題型:閱讀理解

One afternoon, my son came home from school and asked me, “Are all people the same even if their skin color is different?” I thought for a moment, then I said, “I’ll explain. Let’s go to a fruit store first. I have something interesting to show you.”
At the store, I told him that we needed to buy apples. And we bought some red apples, green apples and yellow apples.
After we got home, I told Adam, “It’s time to answer your question.” I put one of each type of apple on the table: first a red apple, followed by a green apple and then a yellow apple. Then I looked at Adam, who was sitting on the other side of the table.
“Adam, people are just like apples. They come in different colors, shapes and sizes. See, some may not even look as delicious as others.” As I was talking, Adam was examining each one carefully.
Then, I took each of the apples and peeled them, placing them back on the table, but in a different place.
“OK, Adam, tell me which one is the red apple, the green apple and the yellow apple.”
He said, “I can’t tell. They all look the same now.”
“Take a bite(一口) of each one. See if that helps you tell which one is which.”
He took big bites, and then a huge smile came across his face. “People are just like apples! They are all different, but if you take off the outside, they’re pretty much the same on the inside.”
“Right,” I agreed. “Just like everyone has their own features but they are nearly the same.”
He completely got it. I didn’t need to say or do anything else.
Now, when I eat an apple, it tastes a little sweeter than before. What perfect fruit it is!
【小題1】I took Adam to buy apples for         .            
A.supperB.his questionC.a(chǎn) partyD.a(chǎn) present
【小題2】As soon as we got home, I put          on the table.
A.a(chǎn)ll the applesB.three apples of different colors
C.three red applesD.three peeled apples
【小題3】After Adam took big bites, he found they         .
A.looked the sameB.tasted goodC.tasted the sameD.weren’t delicious
【小題4】In the end, Adam understood that         .
A.people are much the same even if their skin color is different
B.people are different if their skin color is different
C.the apples look the same after they are peeled
D.a(chǎn)pples of different colors taste different
【小題5】I feel that apples taste a little sweeter than before because         .
A.they are delicious enough B.they are perfect fruit for thinking
C.they are safe fruit D.my son falls in love with them

查看答案和解析>>

科目: 來源: 題型:閱讀理解

Guo Liqin, 24, works as a primary school teacher in a distant area in Yunnan Province. The Internet offers him the latest news and entertainment from the outside world. And many people like him also depends on the online libraries for the free literature(文學(xué)) reading.
A survey in China last year found the online literature is the biggest growth area of Internet entertainment.
Reading for free is also popular in other countries. See what solutions other countries are taking.
Public Libraries
In countries such as Germany, Canada, and the UK, governments pay the authors to have their books in public libraries.
The pay is different from country to country. Some pay according to how many times a book has been borrowed; others pay according to whether the library has bought the book or not.
Google Books
Google Books allow users to see some free parts before buying them.
The author can choose to make from 20% to 100% of the book’s content(內(nèi)容) for free reading . But you can see a full view of books that are out of copyright(版權(quán)).
E-magazines
E-magazines are usually about pop culture, and make money through advertisements. The writers are usually paid by the numbers of words they write.
Digital Library
There are many free online libraries of books which are no longer in copyright.
American and European websites offer classic(古典的) literature and non-fiction texts like dictionaries for download in different languages.
【小題1】Guo Liqin depends on          for free reading.
A.online librariesB.city bookstoresC.school librariesD.borrowing books
【小題2】From the passage we know other countries are taking           solutions for reading for free.
A.3B.4C.5D.6
【小題3】 In some countries, the authors are paid by            to have their books in public libraries.
A.a(chǎn)dvertisementsB.readersC.governmentsD.the word numbers
【小題4】 Google Books and Digital Library allow users to read the full books           .
A.which are out of copyrightB.which are in copyright
C.which are about pop cultureD.which have some free parts
【小題5】The best title of the passage is          .
A.Enjoy ReadingB.Learn How to Read
C.The Importance of ReadingD.How to Read for Free

查看答案和解析>>

科目: 來源: 題型:閱讀理解

My version(視力) is getting worse. I can’t even see what is five feet away from me without glasses. ①我拒絕戴眼鏡,though I know I need to. I’m afraid they will make me look ugly. Besides, I can do well without them. These were my thoughts two years ago, when I was in the sixth grade. An embarrassing experience taught me that what I was thinking was wrong.
School has been out for two months. I was going to junior high school soon, where I was sure that looks are everything. So the question still remained there. Should I, Or should I not, wear glasses? The question was still in my mind when my family and I attended a wedding(婚禮) late in the summer.
During the wedding, I drank too much juice. Soon after it ended, I walked quickly to the bathroom. Since it was an emergency(緊急) and I couldn’t clearly see which door was ③marked boys. I just opened the nearest door and entered the restroom.
Unluckily, I had entered the wrong restroom. But I didn’t know this until I heard a scream(尖叫聲) coming from the entrance when I was washing my hands .
After that, I decided to wear the ugly-looking glasses. I didn’t really ④care about what people thought of me any more, because I never wanted to enter the wrong bathroom again.
On the first day of seventh grade, ⑤my friends didnt make fun of me. Instead they gave me compliments. They thought the glasses made me look more cute and more natural.
So if you know something is right, just do it. ⑥It doesnt matter what others think of you. All that matters is what you think of yourself—and that you can see where you are going!
【小題1】 (A) 試寫出文中③處劃線部分mark的漢語意思:              .
(B)用一個適當(dāng)?shù)挠⒄Z單詞替代文中④處劃線部分care about:              .
【小題2】根據(jù)文中①處的漢語提示,用英語將句子補(bǔ)充完整:                        .
【小題3】寫出文中②處劃線部分的同義句:School _____  _____ two months ago.
【小題4】將文中⑤處劃線部分合并成一句:
My friends gave me compliments _____  _____  _____ fun of me.
【小題5】將文中⑥處的劃線部分翻譯成漢語:                                    .

查看答案和解析>>

科目: 來源: 題型:閱讀理解

短文填空 閱讀下則短文,然后在空白處寫出適當(dāng)?shù)膯卧~,單詞首字母已給出。[有的詞請注意詞形的變化!] (共12個空,做對一個得1分,共10分)
How times flies! Junior 3 students will take the senior high school student entrance exam. They are studying hard for this big challenge, and they are also 【小題1】w     about it. Do they have time to do something to celebrate their middle school years? Many do.
Liu Jia, 14, from Beijing said that in her class students are 【小題2】w     goodbye messages or letters for each other. They are also giving photos to each other.
“Even the head teacher has a project,” said Liu. “She 【小題3】p     to put all our class photos onto a CD and give each student one.”
Li Wei, 14, in Xianning, Hubei said that their English teacher Ms Deng asks them to write what they want to be when they【小題4】g     up on the paper. She likes her students to come back after they graduate, and share their teen-time dreams together. Doing that 【小題5】e     her students to work harder for their future.
Chen Ze, 15, in Guangzhou said his classmates are making “l(fā)ucky stars” as graduation 【小題6】g     . The cheerful stars are 【小題7】m     of colored paper.
“【小題8】B     you make a lucky star, you write some words for the person on the paper,” said Chen. “He or she can read the words after they open the star.”
In Xiao Xing’s school, each Junior 3 student will get a yearbook, in which the graduation classes will put their photos and self-introductions(自我介紹).
Xiao said, “ We have written a 【小題9】p     in the ancient style as the self-introduction!”
“Our class may be not the one with the best school grade but it must be the 【小題10】m    creative one,” said Xiao. “ I feel 【小題11】p     of studying in such a class!”
What good ideas! I think all those will 【小題12】r     them of their good days.

查看答案和解析>>

同步練習(xí)冊答案