Most viruses can be found and killed by our immune system as soon as they enter our bodies.However，some viruses，for example，the coronavirus，are sneaky.They are difficult to recognize and find.These viruses can cause deadly diseases，like COVID﹣19.Human﹣to﹣human transmission can easily occur，and pandemic will therefore break out.Vaccination is by now a simple，safe and effective way to protect us from the diseases.
▲Vaccines are something that "looks" exactly the same as the viruses，mainly made from the viruses that are weakened or killed.They will not make us really ill.They only stimulate and activate our immune system to work，telling it something harmful is coming in.The immune system will know what the "viruses" look like，and send B cells（lymphocytes）or antibodies to find and kill them.Meanwhile，B cells will remember them for the next kill.A vaccine may also give us passive immunity by providing B cells taken from an animal or a human to play the same role.
Scientists have developed more than 180 vaccines to fight against COVID49.The technical approaches of these vaccines can be a little different，but their aims are the same.
Take the inactivated vaccine as an example.In an inactivated vaccine，the coronaviruses are already killed or made into the ones unable to produce more new viruses.When the immune system "sees" them，it will try to kill them.The question is：without enough these viruses• how can B cells remember them？That's why we need to take the vaccine more than one time.Though this vaccine is safe，it might not be as effective as it is expected to be.
The live﹣attenuated vaccine is different.In this vaccine，the viruses are weakened，but they are alive.They can produce enough new viruses to train the immune system to kill and remember them，so people only need to take the vaccine once.The live﹣attenuated vaccine is considered the most effective，but there is a worry：what might happen once these viruses wake up？
Therefore，although vaccination is by now one of the best ways to protect us from COVID﹣19，it can be better.
（1）The coronavirus can .
| A． |
not be killed |
| B． |
not be found |
| C． |
cause deaths |
| D． |
stop pandemic |
（2）Which of the following can be the best topic sentence of Paragraph 2？
| A． |
Vaccination can provide us with B cells. |
| B． |
Vaccines are made from different viruses. |
| C． |
Vaccination can prepare us against viruses. |
| D． |
Vaccines won't make us ill as the viruses do. |
（3）Compared to the inactivated vaccine，the live﹣attenuated vaccine .
| A． |
needs taking more than once |
| B． |
is equally safe |
| C． |
contains viruses that are killed |
| D． |
is more effective |
（4）What can we learn from the passage？
| A． |
Vaccination is good enough to treat COVID﹣19. |
| B． |
The immune system can be more effective with vaccines. |
| C． |
The viruses in inactivated vaccines can make new viruses. |
| D． |
180 vaccines have been developed to fight against diseases. |
Have you ever seen a horse with toes (脚趾)? Millions of years ago, horses had many toes.They had four toes on each front foot.They had three toes on each back foot.The horses were smaller than cats.
These small horses lived in the forest.Their many toes helped the horses run over the soft wet ground.
It was very hot in the forest.But the weather changed.It became cold.Many trees couldn’t live in cold weather.The trees died and fell.Forest became open field.The sun made the ground dry and hard (坚硬).Horses began to change too.They began to get bigger.This took a long time.On the dry hard land, horses needed only their middle toes for running.At last their middle toes became hard.Long ago, the horse had four toes on each of its __________.
| A．back feet | B．front feet | C．right feet | D．left feet |
The cats were __________ the horses at that time.
| A．as big as | B．smaller than | C．bigger than | D．as small as |
When the weather changed, __________.
| A．many trees grew well in cold weather | B．animals began to change too |
| C．cats were older than the horses | D．horses were the same as they are |
任务型阅读（共10分）
Look at the picture. This is my family. My grandfather’s name is Nick Hand. My grandmother’s name is Mary Hand. My father’s name is Jim Hand. My mother’s name is Helen Hand. Jim and Helen are my parents. I have a sister. Her name is Kate Hand. My name is Tom Hand. I am ten, my sister is eight.
阅读短文内容，回答下列问题。How old is Tom Hand?
Is Kate Tom’s sister?
Is Helen Hand his grandmother?
What’s his grandmother’s name?
Is Jim Hand his brother?
根据家谱图，选择正确答案What’s Peter’s last name?
A、Green B、Smith C、BrownRick is Peter’s.
A、father B、brother C、uncleMaria is Frank’s.
A、sister B、mother C、cousinPeter hascousins.
A、one B、two C、threePeter’s sister is.
A、Cindy B、Grace C、Alice
My name is Tom. I’m nine. This is my mother. Her name’s Linda Johnson. Her telephone number is 13052864515. And this is my father. His name is Mike Johnson. His phone number is 13102884699. And this is my sister. What’s her name? Her name is Mary. Look! The boy is my brother Nick. Mary is eight and Nick is six.
根据短文内容，选择正确答案Mother is.
A、Mary Johnson B、Mike Johnson C、Linda JohnsonFather’s telephone number is.
A、13120884699 B、13102884699 C、13052864515Mary is.
A、six B、nine C、eightMy brother is.
A、Tom B、Mike C、NickMy last name is.
A、Johnson B、Tom C、Mike
My name is Ann. Come and meet my family. This is my grandfather Henry Smith and this is my grandmother Helen Smith. They are very kind(善良的). This is my father Bob Smith and that is my mother Anna Smith. Jack is my brother. He is only five. I love my family.
根据短文内容，选择正确答案My grandfather’s name is.
A、Henry B、Helen C、BobHelen is Ann’s.
A、father B、brother C、grandmotherJack and I are.
A、friends B、brother and sister C、father and motherThere are(有)people(人) in my family.
A、3 B、4 C、6Ann’s father is.
A、Bob B、Jack C、Helen