It still puzzles today’s scientists ______ some mammals produce their young ______ others lay eggs to produce their offspring( 后代)

A．that; whileB．why; whileC．how; whenD．what; as

練習冊系列答案
相關習題

科目：高中英語 來源：2010-2011年浙江省杭州外國語學校高二期中考試英語試卷 題型：填空題

He left the monastery and s_____________ lived as a hermit (隱居士) for six years.
【小題1】The color scheme (方案)  for this room was determined by an i_____________ decorator.
【小題2】Hong Kong teenagers i_____________ some pop stars more than their own parents, according to a university survey.
【小題3】It was reported that radiation had been found in d_____________ vegetables after the ministry in China ordered radiation tests on food and water at the end of March in 14 mainland regions.
【小題4】Exports to China are an e_____________ part of the US economy because China is their third-largest export market and is growing faster than many other major destinations for American manufactured goods and farm products.
【小題5】When dealing with the writing in SAT, sometimes students are in a dilemma whether they should just mention the merits of their own country or be more c_____________.
【小題6】When you are wandering alongside the narrow streets with some traditional structures on both sides in Wuzhen, you can still p_____________ the cultural profundity (底蘊) of this entire ancient town..
【小題7】It remains a crucial task for the Chinese government to g_____________ the public security in the coming period due to the country's fast-changing social structure.
【小題8】Enjoying a wild climate and four d_____________ seasons, the environment of Luohe, a city in Henan Province is peaceful and elegant.
【小題9】Funerals are becoming a financial burden for many families across the nation, as they seek to provide eternal s_____________ for their dearly departed loved ones.

查看答案和解析>>

科目：高中英語 來源：2012-2013學年四川省雅安中學高一上學期入學模擬考試英語試卷（帶解析） 題型：填空題

根據(jù)短文內(nèi)容，將下列空白處補充完整，每空一詞。
Children’s schooling is changing very fast today. In the past, teachers k____________(1) children sitting still for hours. They made them remember d_______________(2) kinds of things. In other w______________(3), The children had to go on repeating things until they knew them “by heart”. Today, many teachers want to know if it is p______________(4) to make children learn at all. They say you can o______________(5) help them learn. They say you must let children learn and find out things for t______________(6).
But foe these children, school is a kind of prison. They are there only because their p_____________(7) make them go. They get out of the classroom as soon as the teacher lets them l______________(8). Many of them want to find work, but the law will not let them work until they reach a certain a________________(9). And so, they have to stay in school. Often they do not learn anything at all and h________________(10) every moment in class.

查看答案和解析>>

科目：高中英語 來源：內(nèi)蒙古09-10學年高一下學期月考（英語） 題型：單詞拼寫

單詞拼寫（共10小題；每小題1分，滿分10分）

1. I think he did it on p_____.

2. Many people were killed or i____ during the earthquake.

3. In class, you should be a____ in answering the questions your teacher asks.

4. She comes from London; her n____ language is English.

5. The weather f___ is not always accurate either.

6. We know Bob had cancer, but the news of his death still came as a ____(震驚的事).

7. It does serious harm to children’s character that too much          (暴力) is shown on television.

8. None of us like to work with ____(頑固的) people.

9. She was wearing a pair of glasses so that I hardly ___(辨認出) her at first sight.

10. All children like to play___(在戶外) instead of staying indoors when the weather is fine. 

 

查看答案和解析>>

科目：高中英語 來源：20102011年浙江省杭州外國語學校高二期中考試英語試卷 題型：單詞拼寫

He left the monastery and s_____________ lived as a hermit (隱居士) for six years.

1.The color scheme (方案)  for this room was determined by an i_____________ decorator.

2.Hong Kong teenagers i_____________ some pop stars more than their own parents, according to a university survey.

3.It was reported that radiation had been found in d_____________ vegetables after the ministry in China ordered radiation tests on food and water at the end of March in 14 mainland regions.

4.Exports to China are an e_____________ part of the US economy because China is their third-largest export market and is growing faster than many other major destinations for American manufactured goods and farm products.

5.When dealing with the writing in SAT, sometimes students are in a dilemma whether they should just mention the merits of their own country or be more c_____________.

6.When you are wandering alongside the narrow streets with some traditional structures on both sides in Wuzhen, you can still p_____________ the cultural profundity (底蘊) of this entire ancient town..

7.It remains a crucial task for the Chinese government to g_____________ the public security in the coming period due to the country's fast-changing social structure.

8.Enjoying a wild climate and four d_____________ seasons, the environment of Luohe, a city in Henan Province is peaceful and elegant.

9.Funerals are becoming a financial burden for many families across the nation, as they seek to provide eternal s_____________ for their dearly departed loved ones.

 

查看答案和解析>>

科目：高中英語 來源：20102011年廣東省高一下期末考試英語題 題型：其他題

課文填空 (共10小題；每小題0.5分, 滿分5分)

Still p 1.  how your 5 yuan can have so much effect? Well, just take a look at the fact below. 2. 1997, a tree-planting programme has  3.  the Jiuchengong Valley in Inner Mongolia into a green homeland. Visitors from all over the world now come to admire this great a 4. . What is  5. the success of the programme has greatly improved the lives of the local people. Just think: all this started with 5 yuan! So  6.  you have 5 yuan in your pocket next time, think t7.  about how to use the money. R 8.  you can use it to buy a tree and c 9.  a green future for our motherland, our people and  10. .

 

查看答案和解析>>

同步練習冊答案