相關(guān)習(xí)題
 0  33092  33100  33106  33110  33116  33118  33122  33128  33130  33136  33142  33146  33148  33152  33158  33160  33166  33170  33172  33176  33178  33182  33184  33186  33187  33188  33190  33191  33192  33194  33196  33200  33202  33206  33208  33212  33218  33220  33226  33230  33232  33236  33242  33248  33250  33256  33260  33262  33268  33272  33278  33286  151629 

科目: 來(lái)源: 題型:閱讀理解

According to popular folk tales, many animals are smarter than they appear. Dogs bark before earthquakes; cattle predict rainful by sitting on the ground. But cattle may have another hidden talent of being able to tell which direction is north.

    Small animals__ including birds__ are known to use the Earth’s magnetic (磁場(chǎng)的) fields in migration (遷徙), like a natural GPS ( Global Position System ). Dr. Begall and her colleagues wanted to know whether larger animals also have this magnetic sense. They investigated this possibility by studying images of 8,510 grazing (吃草) and resting cattle in 308 plains across the globe on Google Earth, a website that puts together satellite photographs to produce an image of the Earth’s surface.

    Grazing animals are known to orient (使朝向) themselves in a way that minimizes wind cold from the north and maximizes the warmth of the sun when they are cold. The study ruled out the possibility that the sun position or wind direction were major influences on the orientation of the cattle. The researchers therefore had to study a lot of cows grazing in lots of different places at different times of day, in order to average out these factors and see whether cattle could act like compass needles.

    The researchers concluded that cattle do generally orient themselves in a north-south direction. This north-south preference has also been noted in flies and honeybees. But unfortunately, even the high resolution of Google Earth is not powerful enough to tell which end of the cow is its head, and which its tail. The researchers were therefore unable to answer their research questions of whether cattle prefer to look north or south, and whether that differs in the northern and southern hemisphere.(半球)

1. Which of the following factors might affect Dr. Begall’s research result?

    A. Rainful.                B. Earthquakes.           C. Location.                       D. Cost.

2. What is the major finding of Dr. Begall’s study?

    A. Cattle orient themselves along a north-south axis.

    B. Magnetism cannot be studied scientifically.

    C. Animals prefer to look south.

    D. Google Earth is a reliable research tool.

3. Why were the researchers unable to get the answers to their research questions?

    A. Many cattle in their study were sitting on the ground.

    B. The cattle constantly change directions to avoid wind cold.

    C. There is a magnetic difference between the two hemispheres.

    D. They could not tell a cow’s head from its tail in the satellite pictures.

查看答案和解析>>

科目: 來(lái)源: 題型:閱讀理解

根據(jù)短文內(nèi)容,從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。

As children grow, so does their desire to become independent. ---1--- As parents, our job is to find the right balance between kids’ desire for independence and the need to keep kids safe.

Kids need to be allowed, in fact encouraged; they like to be given certain risks. ---2- The right risk level for your child will depend on their age, developmental level, and character. It will change over time, and there are few hard and fast rules that apply to every child.

--3--- Every time you put your kids in the car you are putting them at risk. It is a fact of life.

So what is a parent to do? We must encourage them to explore their world while setting clear limits where safety is an issue. ---4--- We must let them run, but be prepared to catch them when they fall. We can’t take their steps for them; we can only point out the path.

It’s hard to imagine when they are small, but someday very soon they will be walking ,riding a bike, even driving ! ---5---Children do not often want to become independent.

A. It is impossible for any of us to live completely risk-free.

B. The goal for parents is to determine how much risk is appropriate.

C. Often they will become more willing to take risks and try new things.

D. Sometimes it is really tough for parents to encourage their children to be independent.

E. Someday they must face the world without us, and part of our job is to prepare them for that.

F. If we are overprotective, they are likely to grow up ill-prepared to meet and overcome the challenges they must inevitably(不可避免地)face. 

查看答案和解析>>

科目: 來(lái)源: 題型:

根據(jù)題中所給的漢字或首字母寫出符合句意的單詞的正確形式。

1. My father used to be a farmer and he is now a worker in a c__________ company.

2. The famous writer promised to a__________ our opening ceremony, but so far he hasn’t turned up.

3. Tears of joy ran down her c__________.

4. They w__________ to each other, so I couldn’t hear what they said.

5. We hope this will lead to the development of __________(旅游業(yè)) in this area.

6. I’m saving this bottle of wine for a special __________(場(chǎng)合).

7. I was a bit __________(醉) at the time so I didn’t remember much.

8. National Day is __________(臨近).

9. The red lines on the map ___________(代表) railway.

10. The author gave __________(各種各樣的) reasons for having written the book.

查看答案和解析>>

科目: 來(lái)源: 題型:

假定英語(yǔ)課上老師要求同桌之間交換修改作文,請(qǐng)你修改你同桌寫的以下作文。文中共有10處語(yǔ)言錯(cuò)誤,每句中最多有兩處。錯(cuò)誤涉及一個(gè)單詞的增加、刪除或修改。

增加:在缺詞處加一個(gè)漏字符號(hào)(∧),并在其下面寫出該加的詞。

刪除:把多余的詞用斜線(\)劃掉。

修改:在錯(cuò)的詞下劃一橫線,并在該詞下面寫出修改后的詞。

注意:1. 每處錯(cuò)誤及其修改均僅限一詞。

2. 只允許修改10處,多者(從第11處起)不計(jì)分。

It has been three years before I started learning English. At first I found its quite difficult. I couldn’t pronounce words well, spell correct and remember the rules of grammar. With the help of my teacher, I have made great progresses. Now I am getting well with my English. Three years’ study has taught me that one can not learn English well without a hard work. We must do more listening and speaking either in and out of class. We must also do more reading or writing as well. That is, “Practice make perfect.” That’s the most important thing. Besides, we should also practise use it as much as possible.

查看答案和解析>>

科目: 來(lái)源: 題型:

隨著電腦的普及運(yùn)用,如今越來(lái)越多的中學(xué)生也在借助于電腦字,因此很多中學(xué)生的書(shū)寫水平在急劇下降。針對(duì)此現(xiàn)象你班舉行了主題為“中學(xué)生進(jìn)行書(shū)法比賽是否有必要”的班會(huì),請(qǐng)你根據(jù)下面的提示寫一篇100詞左右的短文。

有的同學(xué)認(rèn)為沒(méi)有必要:1. 電腦時(shí)代,使用手寫的場(chǎng)合很少;

                      2. 在電腦上打字比書(shū)寫快。

有的同學(xué)認(rèn)為很有必要:1. 提高學(xué)生的漢字書(shū)寫技巧;

                      2. 培養(yǎng)學(xué)生對(duì)書(shū)法的興趣;

                      3. 增進(jìn)學(xué)生對(duì)漢語(yǔ)語(yǔ)言文字的熱愛(ài)。

你的觀點(diǎn)

查看答案和解析>>

科目: 來(lái)源: 題型:

The space station spins slowly in ________ space to imitate ________ pull of the earth’s gravity.

A.the; /        B./; the           C./; /            D.the; the

查看答案和解析>>

科目: 來(lái)源: 題型:

________ its low price, the advantage of this car lies in its good quality.

A.According to         B.Different from          C.Apart from         D.Due to

查看答案和解析>>

科目: 來(lái)源: 題型:

When ________ what made him a popular person, he said it was his personality.

A.a(chǎn)sking          B.a(chǎn)sked        C.being asked        D.a(chǎn)sk

查看答案和解析>>

科目: 來(lái)源: 題型:

Some people argue that both the government and the milk producers are ________ for the death of the babies.

A.blamed          B.blaming           C.to be blamed           D.to blame

查看答案和解析>>

科目: 來(lái)源: 題型:

— Did you remember to give Jenny the money?

— Yes.________ I saw her, I’m sure.

A.As far as         B.In case         C.The instant        D.Now that

查看答案和解析>>

同步練習(xí)冊(cè)答案