新外研版 必修1 Unit 5 Period 2 课时练

一、单词拼写

1. 难度：简单

根据语境及汉语或首字母提示正确拼写单词

1.Of all the __________（大规模的）migrations，that of the North American monarch butterflies is one of the most wonderful．

2.__________（不知怎么地）they manage to travel around 4,000 kilometres south and find their way to places where they will spend the winter．

3.Every autumn，millions of these beautiful insects with __________（精致的）black and orange wings begin a long and difficult journey．

4.It then uses its eyes to measure the __________（位置）of the sun．

5.These two pieces of information allow the butterfly to d__________ which way it needs to go and change its direction when necessary．

6.__________（最终），it manages to reach California or Mexico．

7.In many of the places where monarchs can be found，people are d__________ the natural environment by cutting down trees and using __________（化学品）that kill the plants that monarch caterpillars eat．

8.__________（志愿者）have been working together to record their migration and make sure that there are enough plants for them to feed on．

9.They finished __________（测量）that piece of land last week．

10.The tests will help the doctors __________（确定）what treatment they should use．

11.It puzzles scientists how these creatures can s__________ in such cold conditions．

12.Workers built shelters for survivors whose homes had been d_________．

13.The news that the plane had __________（坠毁）made us sad．

二、阅读理解

2. 难度：简单

    Do you know how to plant a tree？Once you’ve chosen a tree，you’ll need to prepare your place for planting．

Planting the Tree

Dig a hole a foot deeper than and twice as wide as the root ball of the new tree．loosen the soil at the bottom and sides of the hole，so roots will be able to easily enter the soil．

Gently remove the tree from the container and guide the tree into the hole．Build soil up and around the roots if necessary，so the tree is at the same soil level as it was originally grown．

Straighten the tree in the hole．Before you begin filling，have someone view the tree from several directions to confirm that the tree is straight．You should fill the hole with existing soil that has been mixed with rich materials．At this time you can also add bone meal and then water the tree．

Caring for the Tree

Caring for the tree once it is planted is an important step so you should provide regular watering．Always feel the soil before watering，as over-watering can also harm the tree．When soil is dry below the surface of the covering，it’s time to water．You will probably need to water at least once a week．Continue until mid-fall，when lower temperatures call for less-frequent watering．

When to Plant a Tree

Now that you know how to plant a tree，the next step is deciding when to plant．Spring and fall are generally the best times to plant a tree．This gives the tree time to adjust（调整）before summer heat or winter cold arrives．In areas without cold winters，trees may be planted during the winter．

1.Which of the following is one of the suggestions for planting a tree？

A.Making the tree straight in the hole．

B.Watering the tree as much as possible．

C.Filling the hole with soil without anything．

D.Planting the tree in winter．

2.What can we learn from“Caring for the Tree”？

A.It is necessary to keep the soil in the hole from getting dry．

B.It isn’t very important to care for it after the tree is planted．

C.It is very important to make sure that the soil in the hole is dry．

D.It is necessary to water the tree frequently in lower temperatures．

3.Why are spring and fall the best times to plant trees？

A.Both seasons don’t have much rain．

B.It is easy to dig holes in both seasons．

C.Trees can grow fast and well in both seasons．

D.Trees have time to prepare to pass the following hard times．

3. 难度：简单

    In the tenth grade，I began working for free at a vet’s that was run by a friend of my parents．I wanted to get experience for what I thought would be my future job．However，on one particular Saturday morning I learnt something perhaps more important．

The hospital was in the middle of one of the poorer sections of the city and some people could only pay for the most basic treatments．On this Saturday，a man and his young son，who was probably about 7 years old，walked in with a small cat in a cardboard box．There was something wrong with the cat’s left eye．But the man could not afford to pay for the cost of the medicine．He kept quiet for a while，and then he asked where the nearest animal shelter was．Hearing this，his son cried and started to argue with him．All of a sudden，an older woman who was sitting in the waiting room stood up，walked up to the counter，and told the man that she would pay for the cost．The man thanked her and the son got to keep a healthy cat．

I always thought it was the right thing to help out a needy person，but I only saw people do acts of kindness on TV or in the movies．What the woman did made me believe that these things do happen in real life，and quite often．

Now，when I can’t decide whether to help someone who is in need，I think of this woman，and then I have the courage to step up to the plate sometimes other people follow．

1.We can infer that a vet’s is most probably a hospital for       ．

A.kids B.the poor

C.animals D.women

2.For what purpose did the writer work at the vet’s？

A.To help his parents’ friend with his work．

B.To make some pocket money．

C.To learn more about society．

D.To gain some work experience．

3.What would the man probably do with the cat if the woman didn’t help him？

A.Give it up．

B.Take it home without treatment．

C.Give it to the woman．

D.Give it to someone on the street．

三、七选五

4. 难度：简单

    What is the largest animal that lives on land？You most likely say，“The elephant．”You are correct．（In the animal kingdom，only the whale is larger．）There are two kinds of elephants．The first is the African elephant．The second is the Asian or Indian elephant．They are related．But they look different．The African elephant is bigger．Its ears are about four feet wide．Its tusks are about six to eight feet long．1.

An African male elephant is about 11.5 feet at the shoulder．It weighs from 12,000 to 14,000 pounds．The largest ever measured stood 13 feet 2 inches tall．

The elephant has thick skin．It’s about one inch thick．It’s heavy．2. Yet it is tender．The bite of a horsefly will draw blood．Elephants like to cover themselves with mud clay（泥土）．This protects their skin from bites by flies．

3. It weighs about 300 pounds．The elephant uses the trunk in many ways．It smells，drinks，and feeds itself with its trunk．

4. Only two thirds of each tusk sticks out．The rest is in the skull．Tusks are used to dig for food．They are also used to fight．When trained，elephants can lift as much as one ton with their tusks．The molars are about one foot long．Elephants have four molars．Each weighs eight to nine pounds．

The mother elephant gives birth after 20 to 22 months．5. It is already about three feet tall．It drinks its mother’s milk until it is three or four years old．

A．The skin alone weighs about one ton．

B．There are many land animals in Africa．

C．Our interest is with the African elephant．

D．The elephant's trunk is about six feet long．

E．The tusks（about six feet long）are really teeth．

F．Many baby elephants miss their elephant families．

G．At birth，the baby elephant weighs about two hundred pounds．