It is difficult to do some of the experiments in our physics textbooks.A．to describeB．describingC．describedD．being described 题目和参考答案——青夏教育精英家教网—

题目内容

26. It is difficult to do some of the experiments ________ in our physics textbooks.

A．to describe

B．describing

C．described

D．being described

解析

练习册系列答案

全国名师点拨小学毕业系统总复习系列答案

相关题目

阅读下面短文，掌握其大意，然后从各题所给的四个选项A、B、C和D中，选出最佳选项。

　　Ernie Pyle wrote some books about the war．One was called“Here Is Your War”,and 　　1　　 was called“Brave Men”．In 1994,he won the Pulizer Prize for his work as a war reporter．

　　In January 1945,Ernie Pyle left to 　　2　　 on the war in the Pacific．On April 18,as he watched the American 　　3　　 land on the Island of Okinawa（冲绳）,he was killed by a Japanese．

　　Ernie Pyle's story shows a(n)　　4　　 and dangerous 　　5　　 of a reporter's life．A newspaper 　　6　　 once asked some young people why they wanted to become newspaper 　　7　　．Most of them said it was because newspaper work was so“exciting”or because“you go to places and see things”．Some said they wanted to become reporters because it was a 　　8　　 life．It was dif ferent from most jobs．

　　It is 　　9　　 that newspaper work can be exciting．Reporters go 　　10　　 the news is happening,and they see fires,storms,and floods．While their work may take them into 　　11　　 places,sometimes funny things happen too．

　　One reporter went to talk to a famous singer at her 　　12　　．He found all the hotel workers on strike．The singer's room was on the sixteenth floor,but the lifts were not 　　13　　．The reporter wanted 　　14　　,so he walked to the sixteenth floor．The singer 　　15　　 to talk to him because she was angry and 　　16　　．

　　The reporter said he would get her some food if she 　　17　　 answer his questions．He walked down from the sixteenth floor to the 　　18　　．The cooks were on strike too,so the reporter 　　19　　 a plate of chicken sandwiches and carried them back upstairs．The singer was pleased,and she 　　20　　 the reporter's questions．

(1)


[　　]
A．	the other
B．	another
C．	other
D．	one

(2)


[　　]
A．	print
B．	announce
C．	publish
D．	report

(3)


[　　]
A．	officers
B．	soldiers
C．	policemen
D．	officials

(4)


[　　]
A．	exciting
B．	excited
C．	interesting
D．	funny

(5)


[　　]
A．	course
B．	way
C．	fact
D．	side

(6)


[　　]
A．	typewriter
B．	journalist
C．	editor
D．	reader

(7)


[　　]
A．	reporters
B．	directors
C．	editor
D．	reader

(8)


[　　]
A．	dangerous
B．	dull
C．	free
D．	bad

(9)


[　　]
A．	good
B．	real
C．	sure
D．	true

(10)


[　　]
A．	where
B．	in which
C．	which
D．	the place where

(11)


[　　]
A．	dangerous
B．	beautiful
C．	faraway
D．	good

(12)


[　　]
A．	office
B．	hotel
C．	house
D．	home

(13)


[　　]
A．	doing
B．	operated
C．	broken
D．	running

(14)


[　　]
A．	a word
B．	a story
C．	the story
D．	the news

(15)


[　　]
A．	requested
B．	reduced
C．	refused
D．	regretted

(16)


[　　]
A．	cold
B．	hot
C．	full
D．	hungry

(17)


[　　]
A．	might
B．	could
C．	should
D．	would

(18)


[　　]
A．	factory
B．	shop
C．	kitchen
D．	hall

(19)


[　　]
A．	kept
B．	made
C．	did
D．	put

(20)


[　　]
A．	replied
B．	answered
C．	asked for
D．	asked

D
If you enjoyed the spring-like sunshine over the weekend and thought the weather has finally turned a corner, you’re sadly mistaken.
Chilly (寒冷的) days and grey clouds are forecast for the week—making it far too early to pack away the winter woollies.
Temperatures will struggle to rise above zero at night and fail to make double figures during the day.
People enjoy the spring sunshine in Sefton Park, Aigburth, Liverpool. Forecasters have predicted a return to chilly weather this week.
Met Office forecaster Charlie said, “It was a nice, dry, bright weekend in many parts and Monday is going to be a similar affair for many.”
“Temperatures will be between 5℃and 8℃, which is below average for the start of spring.”
The sun will disappear from the south of the country after today, with dry but cloudy conditions forecast for tomorrow and Wednesday.
Wednesday will be warmest of the three, with temperatures peaking at 9℃. But this is still two degrees below the March average for the district.
Overnight, temperatures will drop sharply, with lows of minus 3℃for the next three nights.
“It will generally stay on the cold side of average,” said Mr. Powell.
The March misery comes at the end of the coldest winter for more than 30 years.
Temperatures in December, January and February struggled to stay above zero, with the UK’s average 1.5℃, making it the deepest freeze since 1978—79.
It claimed there was just a one-in-seven chance of a cold December to February.
The agency also sadly predicted a “barbecue summer”, saying it was “quite optimistic” that it would be warmer and drier than average.
Following the two mistakes, the Met Office has dropped its long-range seasonal forecasts and will instead publish a monthly prediction for Britain, updated once a week.
In its defense, it says that while short-term forecasts are extremely accurate, Britain’s size and geographical position makes long-term predictions much more challenging.
It also points out that it gave warning of any heavy falls of snow this winter.
68. According to the passage, the weather on Tuesday in the south might be _______.
A. dry but cloudy B. sunny but chilly C. sunny and warm D. cloudy and chilly
69. Which of the following statements is true according to the passage?
A. British people can put away their winter clothes now.
B. The Met Office has shortened its forecast range.
C. The weather forecast becomes more and more accurate.
D. The agency was quite confident of long-term predictions.
70. Which of the following would be the best title for the passage?
A. The big chill isn’t over yet B. A warm spring finally arrives
C. A heavy snow is on the way D. The Met Office drops forecasts

第二部分阅读理解 (满分45分)

第一节　阅读下列短文，从每题所给的四个选项 (A、B、C和D) 中，选出最佳选项。 (每小题2分)

When we think of Hollywood, we think of films and famous film stars. They are part of Hollywood’s history. Today people make films in other places, too. Not all famous film stars live in Hollywood. But Hollywood is still a very special part in Los Angeles, California.

You can easily see where Hollywood is in Los Angeles. There is a big sign on the hills. It says “HOLLYWOOD”. The white letters are fifty feet tall. You can see the sign from far away. The Hollywood sign is a famous Hollywood landmark (标记) in Los Angeles. Many postcards show this famous Hollywood landmark.

In the hills of Hollywood, there is also the Hollywood Bowl. This is an open-air theatre. It is one of the biggest open-air theatres in the world. It has seventeen thousand seats and a very different stage (舞台). The designer (设计师) of the stage was a great American called Frank Lloyd Wright. You can listen to different kinds of concerts at the Hollywood Bowl.

1The best title for the article should be “____”.

A. The History of Hollywood B. Hollywood

C. Famous Films and Film Stars D. Famous Hollywood Sign

2 We learn from the reading that ____ .

A. Hollywood is one part of Los Angeles

B. Hollywood is now a place only for travelers

C. all the films are made In Hollywood

D. “HOLLYWOOD” can just be seen from far away

3 The word “special” in the last sentence of the first paragraph means ____ .

A. unusual B. famous C. old D. new

4At the Hollywood Bowl ____ .

A. all postcards are made B. only 7000 people can get together

C. people can enjoy music D. you can hardly listen to all kinds of concerts

Can people change their skin colour without suffering like pop king Michael Jackson? Perhaps yes. Scientists have found the gene that determines skin colour.

The gene comes in two versions, one of which is found in 99 per cent of Europeans. The other is found in 93 to 100 per cent of Africans, researchers at Pennsylvania State University report in the latest issue of Science.

Scientists have changed the colour of a dark-striped zebrafish to uniform gold by inserting a version of the pigment(色素) gene into a young fish. As with humans, zebrafish skin colour is determined by pigment cells, which contain melanosomes(黑色素). The number, size and darkness of melanosomes per pigment cell determines skin colour.

It appears that, like the golden zebrafish, light-skinned Europeans also have a mutation(变异) in the gene for melanosome production. This results in less pigmented skin.

However, Keith Cheng, leader of the research team, points out that the mutation is dif ferent in human and zebrafish genes.

Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultra-violet rays of the sun(太阳光紫外线), which can cause skin cancer.

But when modern humans leave Africa to live in northern latitudes, they need more sunlight on their skin to produce vit amin D. So the related gene changes, according to Cheng.

Asians have the same version of the gene as Africans, so they pr obably acquired their light skin through the action of some other gene that affects skin colour, said Cheng.

The new discovery could lead to medical treatments for skin cancer. It also could lead to research into ways to change skin colour without damaging it like chemical treatment did on Michael Jackson.

1.. The passage mainly tells us that ________.

A. people can not change their skin colour without any pain

B. the new discovery could lead to search into ways to change skin colour safely

C. pop king Michael Jackson often changed his skin colour as he liked

D. scientists have found out that people’s skin colour is determined by the gene

2.. Scientists have done an experiment on a dark-striped zebra fish in order to ________.

A. find the different genes of humans’

B. prove the humans’ skin colour is determined by the pigment gene

C. find out the reason why the Africans’ skin colour is dark

D. find out the ways of changing peopl’s skin colour

3.. The reason why Europeans are light-skinned is probably that ________.

A. they are born light-skinned people

B. light-skinned Europeans have mutation in the gene for melanosome production

C. they have fewer activities outside

D. they pay much attention to protecting their skin

第二部分阅读理解 (满分45分)

第一节　阅读下列短文，从每题所给的四个选项 (A、B、C和D) 中，选出最佳选项。 (每小题2分)

You can easily see where Hollywood is in Los Angeles. There is a big sign on the hills. It says “HOLLYWOOD”. The white letters are fifty feet tall. You can see the sign from far away. The Holly??wood sign is a famous Hollywood landmark (标记) in Los Angeles. Many post??cards show this famous Hollywood land??mark.

In the hills of Hollywood, there is also the Hollywood Bowl. This is an open-air theatre. It is one of the biggest open-air theatres in the world. It has seventeen thousand seats and a very dif??ferent stage (舞台). The designer (设计师) of the stage was a great American called Frank Lloyd Wright. You can listen to different kinds of concerts at the Hollywood Bowl.

1The best title for the article should be “____”.

A. The History of Hollywood B. Hollywood

C. Famous Films and Film Stars D. Famous Hollywood Sign

2 We learn from the reading that ____ .

A. Hollywood is one part of Los Angeles

B. Hollywood is now a place only for travelers

C. all the films are made In Hollywood

D. “HOLLYWOOD” can just be seen from far away

3 The word “special” in the last sen??tence of the first paragraph means ____ .

A. unusual B. famous C. old D. new

4At the Hollywood Bowl ____ .

A. all postcards are made B. only 7000 people can get together

C. people can enjoy music D. you can hardly listen to all kinds of concerts

试题分类