A. came up B. came in C. came out D. came on

Many ways to sleep

How do you sleep? Most people sleep on their backs or sides. Do animals sleep the same way? Actually, the ways they sleep are much more different — they can lie down, sit or stand while they sleep.

Swiss scientists did a study on 250 different mammals (哺乳动物). They found that the animals’ sleeping postures (姿势) had something to do with their size and weight.

Small animals with short legs sleep on their stomachs. Their body shape is perfect for this posture. They also like to put their legs under their bodies. Rabbits and cats sleep this way.

But larger animals sleep differently. They lie on their sides. That’s because this is more comfortable for their longer legs. Cows and hippos (河马) often sleep like this.

However, there are exceptions. Small animals such as mice sometimes sit down to take a short nap. Some large animals such as horses, zebras and giraffes sleep standing up. This way, they can immediately run away if they are in danger.

Did you know? Albatrosses are large seabirds. They can sleep while flying. They can even do that while flying at a speed (速度) of about 40 km an hour.

【1】The ways animals sleep are much more________.

【2】Animals’ sleeping postures have something to do with their________.

【3】Rabbits and cats like to put their legs________ when they sleep.

【4】Giraffes sleep standing up in order to run away________if they are in danger.

【5】To our surprise albatrosses can sleep while________at a high speed.

思维导图，请根据下图写一份英文竞选演讲稿。

注意事项：

1、发言稿须根据思维导图自拟，要求语句通顺、意思连贯、符合题意；

2、思维导图中括号部分为非限定性内容，仅供参考；

3、词数90左右，演讲稿的首尾已给出，不计入总词数；

4、演讲稿中不得使用真实的个人信息，如校名、人名等。

Good afternoon, everyone! It's a great honor for me to speak here.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

That's all for my speech. Thank you!

A. A, K, S B. H, I, Y C. F, M, X

—Yes, B-A-L-L.

A. spell B. read C. see D. meet

A. is B. are C. was D. were

---I can’t find a way ________ the students quiet.

A. to keep B. keep C. keeps D. keeping

A. in front of B. in the front of C. at front D. in front

【题目】

【1】From the experiment (实验), we can learn something about ________.

A.GeographyB.BiologyC.ChemistryD.Physics

【2】Which of the following is most probably the result of this experiment?

A.The ice cube on the plate melted most slowly.

B.The unwrapped ice cube in warm water melted fastest.

C.The ice cube in your hand melted more slowly than the one on the plate.

D.The ice cube wrapped in foil melted faster than the unwrapped one in warm water.

【3】The purpose of the passage is to ________.

A.encourage the readers to do the experiment

B.advise the readers to do things on their own

C.teach the readers to melt ice cubes in different ways

D.ask the readers to guess the result of the experiment

Why so many fires?

California is burning! Wildfires have spread across the US State since Oct 23 and smoke has filled its skies.

Take the Kincade Fire in northern California for example. It forced ( 迫 使 ) 200,000 people to e【1】its path within one week. The state’s largest power (电力) company cut power to about 206,000 homes in order to s【2】 more fires from breaking out, CBS News reported.

California has seen many wildfires in recent years. Nine of the 10 biggest fires have happened since 2000, i【3】five since 2010, according to The New York Times.

Why is this? California has the perfect wildfire c【4】, Park Williams, a US climate expert (气候专家), told The New York Times. It has dry air and high temperatures from spring through late fall. At the same time, seasonal winds blow across the state every year, causing the wildfires to spread q【5】and last for weeks.

Global warming has also made the fires worse in recent years. It has dried out the state’s trees and o【6】 plant life, causing them to burn more easily.

H 【7】have played a role as well. Burning campfires, garbage debris ( 碎 片 ),and cigarette butts (烟头) can easily cause wildfires. For example, one fire started last year when a car got a flat tire (漏气的轮胎). The car’s body met the road and sent out sparks (火花 ), starting a f【8】.

Lightning strikes (雷击) and volcanic eruptions (火山爆发) can also cause wildfires. However, people have caused 90 percent of California’s wildfires, according to the US National Park Service.

More about wildfires

Wildfires often happen in wooded areas in the US, Canada and Australia. They are also k 【9】 as forest fires or grass fires in Australia.

Wildfires can burn at over 900℃ and reach heights of more than 50 meters. They can move at speeds of up to 23 kilometers an hour, burning e【10】 – trees, brush, homes, even people – in their path.