必修五Unit3ScienceandnatureTask&Project同步练习题（含答案牛津译林版）
详细内容
pany's low profits that year.
4．I can't believe that enormous meal wasn't enough to satisfy your ________(饥饿)．
5．At the end of the news，they often give you a ______(总结；概要)of ten main news stories.
6．Canada and Britain have established diplomatic ____(关系)with North Korea.
7．I think he ________(实施)himself admirably，considering the difficult circumstances.
8．Ships must follow the ________(航道)into the port.
9．________(插入)our fingers between the layers and press them apart.
10．The government feared the strike might produce a ________(连锁)reaction in other industries.
Ⅱ.单项填空
1．Bill insisted________a meeting on what to do for the Japan Earthquake.
A．having held B．to hold
C．on holding D．hold
2．The film was so ________ that I was ________ when I saw it.
A．frightened，frightening
B．frightening，frightened
C．frightened，frightened
D．frightening，frightening
3．________ summary，the two universities have a lot ________ mon.
A．On；on B．On；in
C．In；on D．In；in
4．―How about your school?
―Oh，very good.You can't find ________ one in this city.
A．the better B．the best
C．a better D．better
5．You can profit ________ my mistakes and avoid them yourself.
A．by B．with
C．on D．in
6．(2013•株州高二检测)Examtakers“virtue”will be taken into ________ in the 2013 nationwide public servants' exam.
A．focus B．target
C．consideration D．contribution
7．(2012•扬州高二检测)You didn't let me drive.If we________in turn，you________so tired.
A．drove；didn't get
B．drove；wouldn't get
C．were driving；wouldn't get
D．had driven；wouldn't have got
8．I have been convinced that the print media are usually more ________ and more reliable than television.
A．aurate B．ridiculous
C．urgent D．shallow
9．________the technical worker has limited knowledge，he has a lot of experience.
A．Unless B．While
C．As D．Since
10．Not until he left his home ________ to know how important the family was for him.
A．did he begin B．had be begun
C．he began D．he had begun
Ⅲ.阅读理解
Geically modified(GM)(转基因的)crops have made an enormous positive influence on the world. In recent years，GM technology has brought much benefit directly to farms, reducing the use of poisonous chemicals that kill pests of plants，and reducing greenhouse gas emissions(排放)．
A particular concern among farmers in developing countries is the loss of crops to insect pests.One way to fight this problem is to use chemicals，but this behavior will do harm to the health of farmers，the environment，and the people who eat the food.Instead，biotechnology can be used to increase production of pestresistant crops.For example，in Africa，the sweet potato serves as an important crop，but viruses(病毒)can dramatically destroy its output by up to 80%.The Kenya Agricultural Research Institute，however，has developed a geically modified sweet potato that can increase crop production by 18－25%.What's more，this new kind of potato has genes that resist damage due to bad climate or unexpected natural disasters.
The use of geically modified foods can have a positive effect on the economy，especially in less developed countries.GM crops have already led to economic growth in South Africa，aording to some studies.Because GM crops require fewer chemicals，farmers can save money on both the costs of pesticides and labor necessary to manage the treatments.This，bined with higher output，allow the farmer to gain more from the product.
With an increasing adoption of GM crops, the use of pestcontrol chemicals has been greatly reduced.In fact，while not necessarily related to foodrelated biotechnology，some GM plants have been developed to take care of heavy metal pollution in some polluted soil. Finally，biotechnology can allow people to receive vaines (疫苗)that are difficult to distribute.By putting vaines into food products，anizations can more easily transport them to people in need.
1．We can learn from the text that ________.
A．GM crops benefit the environment
B．farmers fail to grow a lot of plants
C．insect pests do less harm to the soil
D．more greenhouse gas is sent into the air
2．What can we infer from the example of the sweet potato?
A．Kenya will have the most advanced technology in the future.
B．Crops can be modified to grow in worse natural environment.
C．Potatoes grown in wet areas can resist different kinds of insects.
D．The adoption of GM potatoes may do harm to the farmers' health.
3．Which of the following can be concluded from the text?
A．New challenges in world farming have been caused.
B．Certain kinds of GM plants can be used as medicine.
C．Biotechnology will be used in more and more fields.
D．It is difficult to transport GM products in some areas.
4．Aording to the text，GM crops in poor countries ________.
A．need further research on chemical resistance
B．cost more time and money on farm management
C．suffer fewer natural disasters during the growth
D．offer good economic benefits to farmers
5．The text mainly talks about ________.
A．benefits of geically modified food crops
B．distribution of some GM crops in the world
C．progress made in potato growth in Africa
D．the use of biotechnology in medical science
Ⅳ.阅读填空
(2013•浏阳一中高二上期中)
Directions: Read the following passage.plete the diagram by using the information for the passage.Write NO MORE THAN 3 WORDS for each answer.
Sharks have lived in the oceans for over 450 million years, long before dinosaurs appears .There are now about 360 species of sharks, whose size ，behavior ，and other characteristics differ widely.
Sharks range in size from the 6inchlong dwarfdog shark to 60footlong whale shark―the world's biggest fish.The whale sharks, like two other large shark species―the basking shark and the mega mouth shark－are harmless to people because they feed on plants and small aquatic(水生的)animal.
Every year，we catch and kill over 100 million sharks, mostly for food and for their fins.Dried shark fins are used to make shark fin soup, which sells for as much as $50 a bowl in fine Hong Kong restaurants.Others sharks are killed for sport and out of fear.Sharks are volunterable (脆弱)to overfishing because it takes most species 10 to 15 years to begin reproducing and they produce only a few offspring.
While sharks are seen as people?eating monsters, they save human lives.In addition to providing people with food, they are helping us in cancer.They are among the few animals in the world that almost never get cancer.A research shows that chemicals extracted (提取)from shark cartiage(肋骨)have killed cancerous tumors in laboratory animals.Their highly effective immune system also allows wounds to heal quickly without being infected.
Sharks are needed in the world's ocean ecosystems.Although they don't need us，we need them.We are much dangerous to sharks than they are to us.For every shark that bites a person, we kill one million sharks.
Sharks
Origin of sharksSharks appeared 1.________ago，long before dinosaurs.
2.________Dwarfdog sharks are 3.________.
Whale sharks are 60 feet long.
4.________of being caught and killedFor food.
For sport.
5．________.
6.________Sharks help us to 7.________.
Sharks can heal quickly when
8．________.
9.________Humans should protect sharks for the world's ocean ecosystems，
Because we are 10.________sharks.