题目内容

【题目】2019年,我们将迎来中华人民共和国成立70周年。1949年10月1日,毛泽东主席在北京天安门城楼上宣告中华人民共和国成立。下列关于北京市的叙述,正确的是

A. 北京地形以高原和山地为主,地势西北高,东南低

B. 北京属于典型的亚热带季风气候,四季分明

C. 北京是中国的政治、文化和对外交流的中心

D. 北京地处华北平原、天山、内蒙古高原交会的枢纽地带

【答案】C

【解析】

北京位于华北平原的北缘,燕山山脉的南部,地形以平原和山地为主,地势西北高、东南低,A错;北京地处北方地区,属温带季风气候,四季分明,B错;北京是我国的首都,是全国的政治、文化和对外交流的中心,C正确;北京地处华北平原、燕山、内蒙古高原交会的枢纽地带,D错。故选C

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【题目】Some inventions are very important.For example,the telephone allows people to communicate all over the world.The ____ lets people travel long distances in a short time.Life is much easier with these ____ inventions.

Some inventions are just fun.A company in a foreign country has invented ____ flowers.You can listen to music that comes through real flowers.Customers in restaurants can smell the beautiful roses_____ listen to pleasant music while eating.People in the dentist’s office can look at pretty lilies and listen to Mozart while having their______examined!

There is now a vehicle that gets you around with almost no effort ____ .In fact,you drive this invention while standing on it.This vehicle runs by electricity.It ____quite easily.When you lean forward,it moves forward,and when you lean ____ ,it moves backward.

A new kind of bubble liquid has been invented.If you blow bubbles ____ this liquid,they can last for several minutes. ____ are very strong.You can even pick them up and throw them around.

Do you have your own ideas about inventions now?

1A. bike B. bus C. ship D. plane

2A. important B. useless C. boring D. strange

3A. dancing B. talking C. singing D. walking

4A. but B. so C. nor D. and

5A. ears B. eyes C. teeth D. nose

6A. in all B. at all C. after all D. for all

7A. carries B. makes C. works D. plays

8A. forward B. backward C. towards D. afterwards

9A. about B. at C. with D. for

10A. They B. We C. You D. None

【题目】阅读下面短文,用括号内所给动词的适当形式填空(必更时可加情态动词或助动词)

If you've ever stayed up late and then gotten up early the next day, you know what it's like not to get enough sleep. It's very uncomfortable feeling. In fact, for many years scientists 1(believe) that sleep is like food - if we don’t get enough of it, we might get sick or even die. But now they 2 (start)to wonder just how much sleep we need.

Researchers at Imperial College London did a study on fruit flies(果蝇). They found that flies that slept for very short periods of time - about72 minutes a day -still 3 (live) about as long as flies that slept for normal amounts of time. One of the female slept for just 4 minutes each day on average. This has led the researchers to wonder if sleep is less necessary than we previously thought.

Humans are very different from fruit flies. Sleep 4(help) repair tissue (组织) when our bodies perform a lot of maintenance (维护). Sleeping allows our bodies 5 (get) well again from the stress we experience each day. But can we really die from not sleeping? No humans have died so far from 6 (stay) awake for too long. The current(现在的)world record for sleeplessness 7 (hold) by Randy Gardner from the US, who stayed awake for 11 days and 25 minutes in 1964.

Scientist have not yet found any animals that don’t sleep at all. Even animals that only sleep for short periods are not completely sleepless.

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