When referring to the overuse of antibiotics, the expression “too much of a good thing” can't help but come to mind. In many cases, antibiotics are absolutely necessary; for example, they can stop an ear infection from making you go deaf and they can even save your life after surgery. But why is it detrimental to take them too often?

Our immune system is our body’s first line of natural defense against infectious organisms. It protects us from bacteria and other microorganisms that can make us sick. In the past, people relied on their own bodies to cure them of illnesses, without the aid of medication or antibiotics. Nowadays, we often turn to antibiotics to do what our immune system used to do for us. And it’s not difficult to figure out why they're so popular. Antibiotics are an easy cure for many sicknesses and help the patient get out and about again in a very short time.

The problem is that, by relying too much on antibiotics, we are weakening our immune system. Just like our muscles, our immune system needs exercise to stay in shape. If it is not used, it becomes weaker, and thus increasingly more antibiotics are required to cure an illness. Years of overuse lead to a vicious cycle that is almost impossible to break.

The other important factor to consider is that our bodies contain both good and bad bacteria. The good bacteria are essential for our bodies to maintain a balance and in this way, prevent illnesses. They also help to fight off other bad bacteria which make us sick. Unfortunately, antibiotics cannot tell the difference between them, and once in our system, kill off both types. This again results in our getting sick more easily.

Question 71: What is the main purpose of the passage?

A. to explain why antibiotics are absolutely necessary

B. to argue that antibiotics do not allow people to recover

C. to warn people to be cautious with antibiotic use

D. to compare antibiotics to different types of therapy

Question 72: What is the relationship between the immune system and antibiotics?

A. They are both equally effective against infection.

B. They both work to fight off illnesses.

C. They are both a natural form of defense.

D. They both need time to cure the patient.

Question 73: According to the passage, why are antibiotics so well-liked?

A. They make our body stronger.                        B. They are easy to obtain.

C. They can cure all kinds of illness.                 D. They work very fast.

Question 74: How do antibiotics weaken our immune system?

A. They kill off bad bacteria.                                  B. They prevent us from getting exercise.

C. They do its work so it gets less efficient.    D. They decrease the strength of our muscles.

Question 75: in the third sentence of the fourth paragraph, what does they refer to?

A. illnesses                     B. our bodies                   C. antibiotics                   D. good bacteria

Choose the best answer to fill in the blank.
1. I can't go to your party now. I_________ after I finish my housework.
A. am coming B. could come C. will come D. come
2. You should bring a__________ with you when you walk into a forest because you may
lose your way.
A. compass B. torch C. phone D. camera
3. When New Year comes, people in different countries always wear their ________
clothes.
A. traditional B. normal C. ordinary D. tradition
4. Children in Viet Nam always___________ lucky money from their parents or relatives on
New Year's Day.
A. bring B. get C. give D. take than
5. Life in the city is more ____________ that in the countryside.
A. busier B. quieter C. convenient D. boring
6. Could you __________ me the ____________ to the nearest hotel?
A. tell/road B. show/way C. show/road D. tell/street
7. When the New Year comes, people always wear traditional Korean dress and wish each
other a__________ life.
A. healthy B. unhappy C. unhealthy D. health
8. January 1st a day when people in Europe and America ____________ new year
A. remember B. see C. celebrate D. spend
9. Which country is_________, Viet Nam or Japan?
A. large B. largest C. larger D. the largest
10. You can buy fruit and vegetables in a______________.
A. post office B. cinema C. hospital D. grocery
11. They are ____________that their son won the championship.
A. pleasing B. bad C. delighted D. interesting
12. Do you mind if I____________ your car to work?
A. drive B. driving C. to drive D. drove
13. There are a lot of amusement parks__________ our neighborhood.
A. in B. on C. at D. in front of
14. You can improve your health by doing ____________activities.
A. outside B. inside C. indoor D. outdoor
15. There is a theatre ________ Nguyen Du Street. First go straight, then _______ left.
A. on/turn B. in/take C. by/take D. at/turn
 

    Nha Trang - the capital of Khanh Hoa Province is a beautiful place in Viet Nam. It's about 45 kms from Cam lam District. 

    Nha Trang is a great place to  play and have fun. First, when you come here, you should go swimming in Nha Trang beaches because the beaches here are very clean. Then, you must go to Vinpearland - a famous island in Nha Trang. At night, you should go to the night market or eat seafood in the restaurants on the streets. Every year, many tourist come here because the seafood are very good and delicious. Hon Ba mountain is also a famous place in Nha Trang, you should come there one time.

    If you want to go to travel in this summer, you should come to Nha Trang - a famous place.

Bài văn mk vừa viết có bị sai lỗi ko ? Nếu sai thì các bạn sửa lại giúp mình và khi sửa lại thì các bạn sử dụng các từ đơn giản thôi nhé. 

Life will be destroyed ____ all our sources  

a. as long as  b. unless  c. if  d. whether 

____  we can find new sources of energy,our life come to an end  

a. unless  b. when  c. if  d. b or c 

_____  you phone me when you come to England?  

a. do  b. have  c. will  d. would 

Unless we hurry,we’ll ____ the bus  

a. miss  b. remember  c. catch  d. get in 

If you stay up late the previous night,you _____ sleepy the next morning a. feel  b. t feel  c. feels  d. will feel 

Will you go to see the doctor if you ______ a headache?  

a. has  b. will have  c. having  d. have  

Unless you _____ smoking your health won’t get worse  

a. continue  b. continued       c. are continuing  d. will continue 

He won’t speak English ______ he goes to England  

a. when  b. if  c. unless  d. which  

If you're not carefully,you will ______ it  

a. spoiling  b. spoil  c. be spoiled  d. to spoil 

If Mrs Laura Taylor _______ 5 years younger,she would walk round  

a. was  b. is  c. had been  d. were  

If you ______ hard,you will pass the exam  

a. study  b. studied  c. will study  d. would study  

He will not learn much ______ he work harder  

a. if  b. unless  c. as  d. because  

If I were him I ______ smoking  

a. will stop  b. stopped  c. would stop  d. shall stop  

If he ______ early,he’d get to work on time  

a. got up  b. gets up  c. get up  d. has got up  

_______you _______your dinner if your mother was will?  

a. will …cook  b. will cook       c. would cook       d. would … cook  

I’d tell you if I ______ the answer  

a. know  b. knows  c. knew  d. will have known  

If we had more time,we _____ for a picnic  

a. will go  b. would go  c. went  d. will have gone  

What ______you ______ if your father gave you $200?  

A. will …buy  b. will buy     c. would … buy       d. would buy  

If you _______ ,you be late  

a. not hurry  b. won’t hurry c. doesn’t hurry     d. don’t hurry