It’s necessary for human beings to breath _______ and plants can produce it.
A．CO2B．H2C．O2D．N2
C
根據(jù)常識對于人類而言呼吸氧氣是必要的，植物能產(chǎn)生氧氣，故選C。A是二氧化碳，B是氫氣，D是氮氣。
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：初中英語 來源：不詳 題型：完形填空

從下面方框中選出與下列各句中劃線部分意思相同或相近，并能替換劃線部分的選項。（共4小題，每小題1分；計4分）
A. flies    B. as for    C. gets lost    D. says
小題1:The radio reports that there will be another strong wind in South China.
小題2: Well, talking about my study, I’d like to begin with my Englishlearning.
小題3: Little Kim usually loses her way in the city.
小題4:Time goes by quickly!

查看答案和解析>>

科目：初中英語 來源：不詳 題型：聽力題

根據(jù)短文內(nèi)容和首字母提示，在下文空格處填入適當(dāng)?shù)脑~使短文完整。(每空一詞)
Millions of words about young American people’s ideas, feelings and actions have been 小題1:w_▲_ over the years.
Today there are about seven million Americans in colleges and universities. Young people 小題2:u_▲_twenty-five are nearly half of American people.
Many of these will soon be in charge of (負(fù)責(zé)管理)the nation. Naturally their ideas are 小題3:i_▲_ to everyone in the country, and it is necessary for older people to understand what they 小題4:t _▲_ and feel.
College students today have strong opinions about 小題5:r_▲_ and wrong. They are deeply 小題6:i_▲_ in making a better life for all people, 小題7:e_▲_ for those who have not been given a fair chance before now. They see much that is wrong in the 小題8:l_▲_ of their parents. It is 小題9:h_▲_ for them to see what is right and good in the older ways. As a result, there is often 小題10:t_▲_ in American families.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：完形填空

When pets get (1) sick, you can usually take them to an animal doctor or an animal hospital. (2) Sometimes animals are so sick or hurt that you shouldn’tmove them. That’s why Dr Bird, a veterinarian, has a traveling hospital, Dr Bird drives his hospital, which is really a van, to the animals.
Dr Bird has run the hospital for over 10 years, and he has saved the lives of many pets. The van has an operating table, medicines and everything else he needs to treat animals. Dr Bird says (3 )         there will soon be many more traveling hospitals to help sick or injured animals 
小題1: 寫出（1）處劃線詞的近義詞_______________________                       
小題2: 將（2）處句子譯成漢語。_________________________________________       
小題3: How long has Dr Bird run the hospital? __________________________          
小題4: 補充（3）處所缺單詞.  _____________________                           
小題5: Do you like pets? Why?
________________________________________________                           

查看答案和解析>>

科目：初中英語 來源：不詳 題型：單選題

________is the largest freshwater lake in China.
A．Dongting LakeB．Poyany LakeC．Qinghai LakeD．Hongze Lake

查看答案和解析>>

科目：初中英語 來源：不詳 題型：單選題

下列大寫字母按其在字母表中順序排列錯誤的是________
A．EMSB．ABCC．RMBD．MTV

查看答案和解析>>

科目：初中英語 來源：不詳 題型：單選題

選出劃線部分讀音不同的那一項。
A．nameB．DaleC．GraceD．map

查看答案和解析>>

科目：初中英語 來源：不詳 題型：單選題

—Do you know when World Non-smoking Day is?—_____________.
A．It’s a fine day B．It’s May 31 C．It’s SundayD．It’s time to give up smoking

查看答案和解析>>

科目：初中英語 來源：不詳 題型：聽力題

閱讀下面短文，掌握其大意，然后根據(jù)短文內(nèi)容和首字母提示，在短文空白處填入適當(dāng)?shù)膯卧~，使短文內(nèi)容通順、合理。并將完整的單詞填寫在答題卡的相應(yīng)位置上。

Tuesday, 4th May
Hurray! I’ve just met my all-time hero — Wong Kam-Po. I’ve seen him many t  小題1:    on television, but it was fantastic to meet him in person because c  小題2:   is my favourite sport. I’d love to be a professional cyclist (自行車手) one day.
I arrived at Shangri-La Hotel on Sunday to meet my family for lunch, when I found out that Wong Kam-po was giving a talk there. I decided to l  小題3:   to the talk instead. Wong talked about w  小題4:    the gold medal at the 2006 Asian Games. He said he felt very p  小題5:     of himself and his teammates. He explained how he and his team prepared themselves for races.
After the talk, I went up to him and introduced m  小題6:   . I asked him f  小題7:   some advice to improve my riding skills. I was a bit nervous s 小題8:    I couldn’t express myself very well. Wong said that we needed to believe in ourselves and should never give u  小題9:   .
It was a fantastic e 小題10:     and I really enjoyed talking to my hero!

查看答案和解析>>

同步練習(xí)冊答案