Some old people don’t like pop songs because ...

Some old people don’t like pop songs because they can’t _____so much noise

高三英语单项填空简单题查看答案及解析

As their memories decline,some old people tend to be talkative because they______       forget what has just been said.

高三英语单项填空简单题查看答案及解析

In summer, some people avoid outdoor activities because they don't want to get hot and sticky or sun burnt．Luckily, there are some outdoor activities which don't involve breaking sweat．

River rafting

Hot summer weather and cool water-what a perfect match! River rafting can be both scenic and exciting．When the raft follows a gentle stream, the views of the countryside or valley is like a traditional Chinese painting．And when you enter white water where the riverbed creates a natural roller coaster, you feel a rush of adrenaline （肾上腺素）．Paddle your raft to the riverbank to have a picnic or barbecue which will taste best when you are starving．

Where to find: River rafting trips are usually on offer in mountainous or valley regions such as the Three Gorges．

Tips: Wear a helmet and life jacket at all times; bring enough sunscreen; and bring lots of water．

Caving

People say that the only naturally air-conditioned place in summer is a big cave．It is true．Cave tours featuring light shows are old hat．Now it's time to wear a lamp on your helmet like a mineworker to explore caves in darkness．Exploring unknown caverns and navigating underground rivers is what makes caving so thrilling．Plus, caving can be a very healthy sport, for the oxygen level is usually higher so basically you are having an oxygen spa as the bonus．

Where to find: caving can be very risky, so consult local travel agents and go in groups with professional cavers．

Tips: Follow your guides; drink enough water to avoid dehydration（脱水） ; and wear strong and not easily damaged hiking boots．

Coastal walking/cycling and beach activities

For those who live far away from mountains, coastal regions and beaches are good places to spend time in the summer．With sea breezes in your hair, it is nice to take a hike or cycle ride while enjoying the coastline．If you want to be sportier, try beach games, such as soccer and volleyball．It's a totally different experience from playing on hard courts or grass．

Where to find: Just go to the beach or find an urban artificial beach such as the one in Chatoyant Park in Beijing or the man-made lake beach in Wuhan．

Tips: Loads of sunscreen needed; water and snacks are necessary; be aware of jellyfish and garbage floating in the water．

1.What does the underlined words "old hat" in paragraph 5 mean?

A．Out of fashion．　　　　　　　　　　     B．Out of the way．

C．A particular fashion．　　　　　　     D．A unique style．

2.If you love river rafting trips, you can _____．

A．go to the beach　　　　　　　　　　     B．explore caves

C．do some outdoor activities　　　　　 D．drift the boat downstream

3.What is specially needed to explore caves?

A．An oxygen spa．　　　　　　　　　 B．A professional caver．

C．A lamp．　　　　　　　　　　　　　     D．A helmet．

4.Helen lives in a big city, where is the best place for her to spend weekends?

A．A riverbank．　　　　　　　　　　　　 B．Underground rivers．

C．An urban artificial beach．　　　 D．Mountainous areas．

高三英语阅读理解中等难度题查看答案及解析

Some people who don’t like to talk much are not necessarily shy；they ________just be quiet people.

A. must       B. may       C. should      D. would

高三英语单项填空中等难度题查看答案及解析

Some people waste too much water. They don’t believe that it can _____________ some day.

A. use up　　 B. run out of

C. be run out　　 D. run out

高三英语单项填空困难题查看答案及解析

What some people don't realize is ________ difficult life can be after they get addicted to drugs.

A. that　　     B. how

C. why　     D. what

高三英语单项填空中等难度题查看答案及解析

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

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 color of a dark-striped zebrafish（斑马鱼） to uniform gold by inserting a version of the pigment (色素) gene into a young fish. As with humans, zebrafish skin color is determined by pigment cells, which contain melanin (黑色素). The number, size and darkness of melanin per pigment cell determine skin color.

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

However, Keith Cheng, leader of the research team, points out that the mutation is different 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 vitamin D. So the related gene changes, according to Cheng.

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

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

1.The passage mainly tells us that ________.

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

B. the new discovery could lead to research into ways to change skin color safely

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

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

2.It can be inferred from the passage that ________.

A. nowadays people who want to change their skin color have to suffer a lot from the damage caused by the chemical treatment

B. Europeans and Africans have the same gene

C. the new discovery could help to find medical treatments for skin cancer

D. there are two kinds of genes

3.Scientists have done an experiment on a dark-striped zebrafish in order to ________.

A. find the different genes of humans’

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

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

D. find out the ways of changing people’s skin color

4.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 melanin production

C. they have fewer activities outside

D. they pay much attention to protecting their skin

5.The writer’s attitude towards the discovery is ________.

A. neutral B. negative        C. positive       D. unconcerned

高三英语阅读理解中等难度题查看答案及解析

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

It appears that, like the golden zebra fish, light-skinned Europeans also have a mutation (突变)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 different in human and zebra fish genes.

Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultra-violet rays of the sun, 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 vitamin D. So the related gene changes, according to Cheng. Asians have the same version of the gene as Africans, so they probably acquired their light skin through the action of some other gene that affects skin colours, 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 done on Michael Jackson.

1.According to the passage, scientists have found .

A. people living in northern latitudes need more sunlight

B. the reason why people change their skin colour

C. the reason why people get skin cancer

D. the gene that determines skin colour

2.We can infer from the passage that ________.

A. people like to change their skin colour

B. a mutation in the gene for melanosome production is different in human and zebra fish gene

C. people will be able to change their skin colour without chemical treatment in the future

D. skin cancer can be cured now

3.Which of the following is NOT mentioned according to the passage?

A. The version of the pigment gene of Asians and that of Africans are the same.

B. Scientists have succeeded in turning the colour of a dark-striped zebra fish into uniform gold.

C. Dark skin can protect bodies from utral-violet rays of the sun.

D. People like pop king Michael Jackson.

4.The passage is probably taken from __________.

A. a novel         B. a science report

C. a story book       D. a science fiction

高三英语阅读理解中等难度题查看答案及解析

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

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

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

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

However, Keith Cheng, leader of the research team, points out that the mutation is different in human and zebra-fish 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 vitamin D. So the related gene changes, according to Cheng.

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

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

1.The passage mainly tells us that ________.

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

B. the new discovery could lead to research into ways to change skin color safely

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

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

2.It can be inferred from the passage that _____________.

A. nowadays people who want to change their skin color have to suffer a lot from the damage caused by the chemical treatment

B. Europeans and Africans have the same gene

C. the new discovery could help to find medical treatments for skin cancer

D. there are two kinds of genes

3.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 color is determined by the pigment gene

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

D. find out the ways of changing people’s skin color

4. 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 melanin production

C. they have fewer activities outside

D. they pay much attention to protecting their skin

5.The writer’s attitude towards the discovery is ______________.

A. neutral　　　　　　　　　 　　　　　 B. negative　　　　　　　　　 　　　　 C. positive　　　　　 D. unconcerned

高三英语阅读理解困难题查看答案及解析

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 different in human and zebrafish genes.

Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultra-violet rays(紫外线) of the sun, 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 vitamin D. So the related gene changes, according to Cheng.

Asians have the same version of the gene as Africans, so they probably 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.What is the main idea of the passage?

A. People can’t change their skin colour without any pain.

B. The new discovery helped find 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.It can be inferred from the passage that ________.

A. nowadays changing the skin colour with the chemical treatment has bad effect

B. Europeans and Africans have the same genes

C. the new discovery could help to find medical treatments for skin cancer

D. there are two kinds of skin genes

3.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 people’s skin colour

4.Which of the following statements is TRUE?

A. Michael Jackson died of skin damage caused by chemical treatment.

B. American blacks produce more vitamin D with their skin than others.

C. The gene determining skin colour exists widely in whites, blacks and Asians.

D. The melanosomes in the skin of blacks usually cause skin cancer more often.

高三英语阅读理解中等难度题查看答案及解析