北师大版必修一Unit 2 Heroes高考一轮复习检测卷(含答案)
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1、Unit 2 Heroes 高考一轮复习检测卷高考一轮复习检测卷 时间:100 分钟 满分:120 分 选择题部分 第二部分第二部分 阅读理解阅读理解(共两节,满分共两节,满分 40 分分) 第一节(共 10 小题;每小题 3 分,满分 30 分) 阅读下列短文,从每题所给的 A、B、C 和 D 四个选项中,选出 最佳选项。 A People love cellphones, which is why nine in ten Americans own one.But does heavy use of cellphones pose a risk of cancer? This questi
2、on has caused controversy for many years.A new study in rats now augments those concerns.Its data linked long- term, intense exposure to radiation from cellphones with an increased risk of cancer in the heart or brain.The results have yet to be confirmed, the authors note. Indeed, although the rat s
3、tudy found a link between cellphone radiation and cancer, it offers no clues to why such a link might exist, notes Jonathan Samet.He teaches preventative medicine and directs the Institute for Global Health at the University of Southern California in Los Angeles.Still, he calls the new studys findin
4、gs “significant”They could lead to studies researching how cellphone radiation might cause cancer, he says. Phone signals are relayed between cell towers and cellphones via radio waves.This radio frequencyor RFradiation is a type known as non- ionizing(非电离的)Unlike X- rays, non- ionizing radiation do
5、es not deposit enough energy into cells to release electrons from atoms or molecules, producing ions.So it lends to be far less harmful than ionizing radiation, such as X- rays.But that does not mean radio waves might not cause harm. In very large doses(量) this radiation will heat the body and cause
6、 tissue damage.But its not yet known what much lower RF levels might do, such as those from cellphone use.Five years ago, the World Health Organizations International Agency for Research on Cancer, or IARC, concluded that cellphone use “is possibly careinogenic(致癌的)” Its conclusion was based on what
7、 little research data was available at that time.But notice that IARC was not certain.It said only that phone use might “possibly” cause cancer.So scientists at the National Toxicology Program, or NTP, investigated further. 1 Which of the following can replace the underlined word “augments”? Afigure
8、s out Bputs out Crefers to Dadds to 2In which aspect does Jonathan Samet think the new study in rats is significant? AIt assists him with his teaching. BIt indicates a new research direction. CIt warns people to mind cellphone safety. DIt makes a breakthrough in cancer research. 3What might be the t
9、heme of NTP scientists further research? AWhy cellphone use causes cancer. BWhether cellphone use really causes cancer. CWhat health effects cellphone use has. DHow much exposure to cellphone radiation is safe. B Bees play a vital role in the world.Unfortunately,bees are dying by the second. The mai
10、n purpose of bees is to make honey.Honey, shockingly, does not exist for human consumption; it is essential to the insects.Honeybees store honey in their hives (蜂箱)in order for the bees to have energy for their flight muscles and for heating the hives during the winter period.They collect pollen (花粉
11、)which supplies protein for young bees to grow. According to National Honey Board, the increased production and quality of agricultural crops as a result of honeybee pollination are valued at more than $ 14.6 billion per year.These insects are responsible for over 70 of the fruits and vegetables we
12、eat today, including apples, grapes, coffee, beans, and broccoli. So if they are so valuable to agriculture, why do they keep dying off? A key suspect seems to be pesticides (农药) Honeybees who are exposed to pesticides result in the damage to their neurological (神经系统的) functions, specifically memory
13、 or behavior.And thats why the majority of worker bees disappear and leave behind a queen, plenty of food and a few nurse bees to care for the remaining immature bees and the queen.There are several other causes of the decline of bees, including the destruction of natural habitats, like woodlands, f
14、orests, and other habitats for bees.Climate change is also a factor in the decline of the wild bee population. Actually, there are a variety of methods to help the bee population grow.One way is to start your own organic garden by planting bee- friendly plants.Pesticides are used in both industrial
15、practices and even in your home, so it is best to find organic seeds and weed killers. 4Why do honeybees store honey in their hives? ATo provide enough honey for humans to consume. BTo draw protein out of honey for young bees. CTo help attract other insects and make hives stronger. DTo strengthen be
16、e muscles and heat hives in winter. 5Apples and beans are mentioned in the third paragraph to show that Abees supply human beings with basic food Bbees mainly live on these agricultural crops Cbees are of great importance to fruits and vegetables Dbees can bring in more money for farmers every year
17、6What is most likely to cause the worker bees to leave their hives behind? AThe lack of food. BThe abuse of pesticides. CThe fighting among bees. DThe destruction of the habitats. 7What would the author probably discuss in the paragraph that follows? AAnother way to save bees. BOther tips for choosi
18、ng seeds. CMore methods to plant green organic fruits. DCauses of the decline in the wild bee population. C Famous resorts (度假胜地) on the earth Maldives Maldives is famed as the last paradise (乐园) on the earth.Its made up of more than 1, 800 coral islands, spreading over a sea area of about 90 thousa
19、nd square kilometers on the Indian Ocean.People in Maldives believe in Islam.They must observe the religious rules strictly.However, tourists dont need to follow these customs inside hotels, but they must do as the locals when they enter the community of the local people. Jeju Island Jeju Island, al
20、so known as the “Islands of the Gods”, is the biggest island of South Korea.It is a volcanic island with a pleasant climate.Its yearly average temperature is 16 , which makes it the most attractive vacation stop in Northeast Asia.It has gained fame as a shopping paradise.Here all the luxury (奢侈品) br
21、ands are free of duty.Every summer thousands of tourists come here to look for the gods, enjoy the coolness of the gentle sea breeze and buy cheap luxuries. Phuket Island Phuket Island, the biggest island of Thailand, is called a pearl on the Indian Ocean.It is world- famous for its beautiful beache
22、s.Some are quiet and tourist- friendly, and some are as luxurious as personal vacation beaches.Some are famous for sea sports, and some are attractive to lovers of evening entertainments. Therefore, youll have a good time here whether youre single or accompanied by your friends. Hayman Island Hayman
23、 Island, a secret vacation island, is one of the coral islands that make up the Great Barrier Reef.Every year thousands of tourists come here to admire the beauty of the tropic sea and the charming scene of the Great Barrier Reef. However, they seldom see any waiters and waitresses around as they wo
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