回答下列問(wèn)題。
1. What colour is Canada's flag?
    _______________________.
2. What does Canada's flag have?
    _______________________.
3. What is the capital of Canada?
    _______________________.
4. Where is Niagara Falls?
    _______________________.
5. Where are the Rocky Mountains?
    _______________________.
1. It's red and white.
2. It has a leaf.
3. It's Ottawa.
4. It's in Canada.
5. They are in Canada, too.
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:初中英語(yǔ) 來(lái)源: 題型:

(8分)材料   蘇云金芽孢桿菌生長(zhǎng)到一定階段,菌體內(nèi)一端形成芽孢,另一端形成一種被稱為伴孢晶體的蛋白質(zhì)晶體。菌體破裂后釋放出芽孢和伴孢晶體,伴孢晶體本身并無(wú)毒性,是毒素的前體。當(dāng)昆蟲吞食伴孢晶體后,在腸道內(nèi)堿性環(huán)境條件和特定的蛋白酶的作用下,伴孢晶體變成毒素分子,能使小腸上皮細(xì)胞萎縮退化,昆蟲停食,最后脫水死亡?茖W(xué)家利用蘇云金芽孢桿菌的這個(gè)特性,在實(shí)驗(yàn)室大量培養(yǎng),制成生物農(nóng)藥,灑在農(nóng)作物上,讓害蟲吃后中毒死亡。或利用基因工程技術(shù),把蘇云金芽孢桿菌的抗蟲基因轉(zhuǎn)到農(nóng)作物體內(nèi),培育出抗蟲品種。請(qǐng)根據(jù)上述材料回答下列問(wèn)題:

(1)上圖中,切斷a處的工具酶是____________ ,切斷b處的酶是             ______。
(2)作為目的基因載體的細(xì)菌質(zhì)粒往往要帶有一個(gè)抗生素抗性基因,該抗性基因在基因工程中主要用于_____________________________________________________。
(3)蘇云金芽孢桿菌的抗蟲基因?qū)朊藁?xì)胞是否表達(dá),最簡(jiǎn)便的檢測(cè)方法是________________________________________________。
(4)蘇云金芽孢桿菌的抗蟲基因轉(zhuǎn)到農(nóng)作物體內(nèi)后,也能產(chǎn)生伴孢晶體蛋白,說(shuō)明___________________________。
(5)轉(zhuǎn)基因工程改良動(dòng)植物品種,最突出的優(yōu)點(diǎn)是_____________________________ 。
(6)大面積種植抗蟲棉對(duì)該地區(qū)生態(tài)平衡會(huì)造成怎樣的影響?                                                   
①________________                       _____________
②_____________________                          _____。

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源: 題型:閱讀理解

Answer the questions (根據(jù)短文內(nèi)容回答下列問(wèn)題)
1.Helen Monson has always been interested in helping her community. Her first volunteer experience was for the American Red Cross when she was in high school. When she was a school teacher, she also found time to volunteer. One year, she organized a Super Saturday Fun Day for kids in the community. She also used to volunteer at the Mint Festival every year. One summer, she served food, another year she organized an art programme.
2.After she retired, she started volunteering to help the old. When her father was older, he was not able to see as well as he used to, which made her sad because he had always enjoyed reading. She decided it would be fun to read to elderly people in her community. She also helped one woman write her stories. Ann was almost 100 years old, and Helen wrote down information about her life when she visited her. She put the information in a book and got it published. Ann was very excited to share her life story with her children and her grandchildren.
3.After a hurricane(颶風(fēng)) destroyed some southern cities, Helen volunteered again for the American Red Cross. She prepared food and answered phones in a care centre. She says, “I have always liked the Red Cross because the organization helps people in need no matter what.”
4.One day, Helen read an article in the newspaper about refugees(難民) who needed to learn English. Now, she meets once a week with Sahra, a 38-year-old woman, from Somalia. Sahra is living and working in a town about 30 minutes’ walk from where Helen lives. They work on reading and writing skills. Helen gave Sahra a camera and asked her to take pictures of her daily life. She developed the pictures, and then asked Sahra questions about them. In the end, they wrote a book together and used the photos in the book. This helped Sahra learn many new words about her everyday life.
5.Helen says, “The most rewarding(有益的) part of volunteer work is becoming friends with the people I help. They enrich my life as well as I enrich theirs.”
【小題1】When was Helen’s first volunteer experience for the American Red Cross?
【小題2】What did Helen do after she retired?
【小題3】Why was Ann excited when her book got published?
【小題4】Where did Helen work when she volunteered again for the American Red Cross?
【小題5】How far is Sahra living and working from Helen’s home?
【小題6】Did Helen help Sahra to learn English?
【小題7】What can you learn from Helen?

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源:2010年重慶市西南師大附中初一上學(xué)期期中考試英語(yǔ)卷 題型:閱讀理解

Perhaps once you got free plastic bags when you shopped at the supermarket. But now things have changed already.
Since June 1, 2008, China has banned(禁止) its shops and supermarkets providing free plastic bags. Shoppers have to pay for bags if they need them. “We hope it will encourage people to use cloth bags and baskets for their vegetables,” said a spokesman from the Chinese government. “Plastic bags have led to a big waste of energy and on the other hand, they pollute(污染) the air, rivers and soil. It takes around 1000 years for the bags to break down. They are also dangerous to wildlife, which eats them without knowing.”
A large number of Chinese people have begun to make their own cloth bags. Li Linwei, a student in Shenyang, Liaoning Province, made a bag out of an old dress of her mother’s. “ I have given it to my grandmother as a Mother’s Day present. From now on, she will use it when she goes shopping.” said the girl.
根據(jù)短文內(nèi)容,回答下列問(wèn)題。(5分)
1. Since what time, supermarkets have been stopped from providing free plastic bags?
2. Without free plastic bags, what will people use when they go shopping according to the passage?
3. Do plastic bags pollute the environment?
4. How long will it take the plastic bags to break down?
5. What present did Li Linwei give her grandmother on Mother’s Day?

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源:2012年仁愛(ài)版初中英語(yǔ)八年級(jí)上冊(cè)Unit4Topic1練習(xí)卷(解析版) 題型:閱讀理解

Trees are useful to man in three important ways.

The first important way is that they provide(提供) man with food, wood and the other products. Trees provide not only man with food, but also many animals with food. Without trees many animals could not live on the earth. It’s not easy for man to live on the earth, either.

The second important way is that trees give us shade(陰涼). On a hot summer day, people are eager(渴望) to have a rest under the tree after they have a long walk. You can imagine how important the shade of a tree is to man and animals.

The third important way is that trees help to prevent droughts and floods(防止干旱和洪水). However, in many parts of the world, man hasn’t realized the third way. They were cutting trees down in large numbers. In the end they find that they have lost the best friends they had.

根據(jù)短文內(nèi)容,回答下列問(wèn)題。

1. How many important ways are trees useful to man?

____________________________________________

2. Trees only provide man with food, don’t they?

____________________________________________

3. On a hot summer day, what do trees give us?

____________________________________________

4. What does the underlined word “they” means?

____________________________________________

5. What’s the best title of the passage?

____________________________________________

 

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源:2013屆遼寧省鞍山市初二上學(xué)期期末考試英語(yǔ)試卷(解析版) 題型:閱讀理解

New York is one of (A)_______ (excite) cities in the world.

You might want to do some shopping in New York. Fifth Avenue is probably New York’s most famous shopping street, but if you go, be prepared to “window shop” only. This is shopping for the rich. There are other, less expensive shopping areas(區(qū)域)nearby, and you’ll soon (B)come across famous stores such as Bloomingdales, Macy’s and FAO Schwartz.

And if you’ve brought your rollerblades, then a visit to Central Park is a must. This is a large, open park right in the middle of Manhattan, but if you thought that people came here to relax, sits down for a few minutes and get away from the rush of New York life, then you’d be wrong. Nobody sits in Central Park: they run, jog(慢跑), and most of all they rollerblade.

When you leave New York, you might be tired, even poor and overweight, but the one thing you won’t be is bored!   

1.用(A)處所給單詞的適當(dāng)形式填空。(A)_________________________

根據(jù)短文內(nèi)容,回答下列問(wèn)題。

2.Why would you probably only “window shop” in Fifth Avenue?

_____________________________________________

3.What is Bloomingdales?

_____________________________________________

4.What don’t people do in Central Park?

_____________________________________________

 

查看答案和解析>>

同步練習(xí)冊(cè)答案