31. A tornado looks like a big, dark .................. coming from the bottom of a storm cloud.
A. funnel B. bowl C. cloud D. mushroom
32. Thousands of seismographs ( may ghi dia chan) which .................. all over the world record about a
million small earthquakes every year.
A. places B. placed C. are placed D. placing
33. In 1998, Hurricane Mitch killed ................... of people and washed away whole villages in Central
America.
A. a thousand B. thousands C. many thousand D. two thousand
34. There are .......................... tornadoes in spring than in any other season.
A. moret B. many C. much D. less
35. Daddy, it’s the weather forecast .................... TV.
A. in B. to C. on D. at
36. Please hurry. We need these documents ........................ delay.
A. under B. without C. in D. at
37. We thought the two films were very similar .................... a great extent ( pham vi)
A. to B. with C. at D. in
38. Police officers don’t have to wear uniform when they are ...................... duty.
A. on B. in C. of D. off
39. Please bring some raincoats just ..................... case.
A. in B. at C. on D. to
40. The students are reading some books ................. are on disasters.
A. who B. whom C. which D. where

. I don't expect much traffic, but ________ there is, I think we should leave early.

A. in case B. in case of C. in time D. in a hurry

27. Although Tom’s grandmother doesn’t _____ weather forecasts, she likes watching them.

A. experience B. trust C. expect D. predict

28. An area of land with hills or mountains is called the _______.

A. regions B. territories C. highlands D. environment

29. They are going to a park ______ the other side of Saigon Bridge.

A. in B. on C. at D. to

30. The word “typhoon” comes ______ the Chinese language, doesn’t it ?

A. from B. for C. about D. with

31. The accident ______ while he was driving to the office.

A. occurred B. was occur C. was occurred D. was being occurred

32. That important event ______ in 1945.

A. happened B. happening C. was happened D. has happened

33. She was having a rest when the volcano _______ .

A. erupted B. flew C. flowed D. broke

34. Two hundred people died in that volcano ______.

A. corruption B. eruption C. destruction D. reduction

35. Tidal waves are the result of an _______ shift in the underwater movement of the Earth .

A. amazing B. alternative C. abrupt D. unpleasant

36.________are funnel-shaped storms passing overland below a thunderstorm.

A. Earthquakes B. Tropical storms C. Hurricanes D. Tornadoes

37. In 1995 , a huge earthquake struck Kobe city in Japan and caused severe _______

A. damage B. destruction C. shift D. collapse

38. The earthquake _______ the city at 2 this morning

A. occurred B. hit C. swept D. measured

39. Thousands of people were saved because scientists had__them about the volcanic eruption.

A. said B. spoke C. warned D. talked

40. A tropical storm which reaches 120 kilometers an hour is called a _______ in North and South America.

A. typhoon B. cyclone C. hurricane D. tornado

41. Ninety percent of earthquakes occur _______ the Pacific Rim.

A. around B. at C. in D. about

42. The roof ________ under the weight of snow last night.

A. collapsed B. fell C. dropped D. flew

43. A tornado looks like a big, dark _______ coming from the bottom of a storm cloud.

A. funnel B. bowl C. mushroom D. cloud

44. Early warnings about tornadoes could save many __________.

A.lives B. life C. living D. things

45. Yesterday a typhoon _________ a coastal city in the country.

A. hit B. strike C.collapsed D. predicted

46. People can know when a volcano will ________ nowadays, can't they ?

A. break B. warn C. erupt D. seek

47. A tropical storm is called a hurricane in North and South America when it _____ 120 kilometers per hour.

A. reaches B. goes C. gets D. comes

48. A ____ is a very large wave.

A. tidal wave B. tsunami C. tornado D. a and b are correct.

49. A / An __________ is a sudden strong shaking of the ground.

A. snowstorm B. tidal wave C. earthquake D. volcano.

50. A _______ is a tropical storm with strong winds.

A. typhoon B. tornado C. volcano D. tsunami

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Forces other than damaging winds are also at work inside tornadoes. Sometimes, as the writhing, twisting funnel passes over a house, the walls and ceiling burst apart as if a bomb had gone off inside. This explosion is caused by the low air pressure at the center of a tornado.

The pressure at the center of a tornado is usually 13 pounds per square inch. However, inside the house, the air pressure is normal, about 15 pounds per square inch. The difference of 2 pounds per square inch between the inside and outside pressure may not seem like much. But suppose a tornado funnel passes over a small building that measures 20 by 10 by 10 feet. On each square inch of the building, there is 2 pounds of pressure from the inside that is not balanced by air pressure outside the building. On the ceiling, that adds up to an unbalanced pressure of 57, 600 pounds. The pressure on the four walls adds up to 172,800 pounds.

If windows are open in the building, some of the inside air will rush out through them. This will balance the pressure inside and outside the building. But if the windows are shut tightly, the enormous inside pressure may cause the building to burst.

Unfortunately, heavy rain and hail often occur in thunderstorms that later produce tornadoes. So people frequently shut all windows to protect their property. This may cause far worse damage later. For the same reason, tornado cellars must have an air vent. Otherwise, the cellar door might be blown out when a tornado passes over it.

In line 2, the word "funnel" refers to which of the following?

A. A bomb

B. A house

C. A tornado

D. An explosion

1 :The men and animals ________ were coming through the streets made a big cloud of dust.
A. who                         B. which                      C. that                         D. whom

2:My letter ________have come yesterday, but it didn’t.

A. must                       B. should                     C. ought                      D. can

3:Phone me before eight; ________I’ll be too busy to talk to you.

A. unless                     B. whether                  C. otherwise                D. if

4:This wall is said ________ three hundred years ago.

A. to build                  B. to have been built    C. to have built          D. to be built  

5.   Peter:  "Thanks for your help, John."

             John:  "________ "

            A. With all my heart    B. Never remind me   C. It's my pleasure      D. As you wish

6:The weather is very nice. Let’s go for a walk, ______?

A. shall we                  B. will we                   C. do we                      D. have we

7:She often uses her goods as _______ as she can.

A. economic                B. economically          C. economical             D. economicly

8:Let’s wait for her here; I’m sure she will ________

      A. turn off                   B. turn up                    C. turn down               D. turn over

9:Thousands of people ________ near the Fukushima nuclear power plant have been ordered to evacuate.
A. living                      B. are living                 C. who living               D. A and C are correct

10:It costs about fifty dollars to have a tooth ________.

            A. filling                      B. to fill                       C. filled                       D. being filled

11:The roof was damaged and water ________ from the ceiling in wet weather.

 A. spilled                    B. dripped                   C. drained                   D. dropped

12.________little we may like it, old age comes to most of us.                                                              A. In spite of                  B. So                           C. As                           D. However

13. Madrid is ________ bigger than Granada.

A. much                      B. bit                           C. lot                           D. many

14. You are ________ to clean the bathroom.

            A. declared                 B. imagined                 C. supposed                D. spoken

15. This school needs ________. It looks so old.

A. to repaint                B. repainting               C. repainted                D. to be repainting

16. I had nothing to ________, so I decided to keep silent.                                                                     A. say                         B. tell                          C. talk                         D. speak

17.The captain as well as the passengers ________ frightened.

A. be                           B. was                         C. to be                        D. were

18. In order to buy his house, he had to obtain a large ________ from his bank

A. loan                         B. finance                    C. capital                     D. debt

19. Only because she had to support her family ________ to leave school.

A. that Alice decides  B. did Alice decide     C. does Alice decide   D. Alice decided

20.We have just built _____.

A. three public excellent tennis courts           B. three excellent public tennis courts

            C. three tennis courts excellent public            D. three tennis public excellent courts
Giúp mình với ạ 
Nếu được có thể giải thích luôn hộ mình nha đc k ??

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Forces other than damaging winds are also at work inside tornadoes. Sometimes, as the writhing, twisting funnel passes over a house, the walls and ceiling burst apart as if a bomb had gone off inside. This explosion is caused by the low air pressure at the center of a tornado.

The pressure at the center of a tornado is usually 13 pounds per square inch. However, inside the house, the air pressure is normal, about 15 pounds per square inch. The difference of 2 pounds per square inch between the inside and outside pressure may not seem like much. But suppose a tornado funnel passes over a small building that measures 20 by 10 by 10 feet. On each square inch of the building, there is 2 pounds of pressure from the inside that is not balanced by air pressure outside the building. On the ceiling, that adds up to an unbalanced pressure of 57, 600 pounds. The pressure on the four walls adds up to 172,800 pounds.

If windows are open in the building, some of the inside air will rush out through them. This will balance the pressure inside and outside the building. But if the windows are shut tightly, the enormous inside pressure may cause the building to burst.

Unfortunately, heavy rain and hail often occur in thunderstorms that later produce tornadoes. So people frequently shut all windows to protect their property. This may cause far worse damage later. For the same reason, tornado cellars must have an air vent. Otherwise, the cellar door might be blown out when a tornado passes over it.

Which of the following is the main topic of the passage?

A. How tornadoes can be prevented

B. When tornadoes usually occur

C. Where tornadoes are formed

D. Why tornadoes cause so much damage

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Forces other than damaging winds are also at work inside tornadoes. Sometimes, as the writhing, twisting funnel passes over a house, the walls and ceiling burst apart as if a bomb had gone off inside. This explosion is caused by the low air pressure at the center of a tornado.

The pressure at the center of a tornado is usually 13 pounds per square inch. However, inside the house, the air pressure is normal, about 15 pounds per square inch. The difference of 2 pounds per square inch between the inside and outside pressure may not seem like much. But suppose a tornado funnel passes over a small building that measures 20 by 10 by 10 feet. On each square inch of the building, there is 2 pounds of pressure from the inside that is not balanced by air pressure outside the building. On the ceiling, that adds up to an unbalanced pressure of 57, 600 pounds. The pressure on the four walls adds up to 172,800 pounds.

If windows are open in the building, some of the inside air will rush out through them. This will balance the pressure inside and outside the building. But if the windows are shut tightly, the enormous inside pressure may cause the building to burst.

Unfortunately, heavy rain and hail often occur in thunderstorms that later produce tornadoes. So people frequently shut all windows to protect their property. This may cause far worse damage later. For the same reason, tornado cellars must have an air vent. Otherwise, the cellar door might be blown out when a tornado passes over it.

According to the passage, tornadoes can destroy buildings because the ________.

A. force of a tornado increases the air pressure in a building

B. air pressure at the center of a tornado is over 172,000 pounds

C. weight of a tornado can crush a building's roof when it passes overhead

D. air pressure inside a tornado is less than the air pressure inside a building

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Forces other than damaging winds are also at work inside tornadoes. Sometimes, as the writhing, twisting funnel passes over a house, the walls and ceiling burst apart as if a bomb had gone off inside. This explosion is caused by the low air pressure at the center of a tornado.

The pressure at the center of a tornado is usually 13 pounds per square inch. However, inside the house, the air pressure is normal, about 15 pounds per square inch. The difference of 2 pounds per square inch between the inside and outside pressure may not seem like much. But suppose a tornado funnel passes over a small building that measures 20 by 10 by 10 feet. On each square inch of the building, there is 2 pounds of pressure from the inside that is not balanced by air pressure outside the building. On the ceiling, that adds up to an unbalanced pressure of 57, 600 pounds. The pressure on the four walls adds up to 172,800 pounds.

If windows are open in the building, some of the inside air will rush out through them. This will balance the pressure inside and outside the building. But if the windows are shut tightly, the enormous inside pressure may cause the building to burst.

Unfortunately, heavy rain and hail often occur in thunderstorms that later produce tornadoes. So people frequently shut all windows to protect their property. This may cause far worse damage later. For the same reason, tornado cellars must have an air vent. Otherwise, the cellar door might be blown out when a tornado passes over it.

According to the passage, people close their windows to prevent damage caused by ________

A. tornadoes

B. thunderstorms

C. uprooted trees

D. bursting structures

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Forces other than damaging winds are also at work inside tornadoes. Sometimes, as the writhing, twisting funnel passes over a house, the walls and ceiling burst apart as if a bomb had gone off inside. This explosion is caused by the low air pressure at the center of a tornado.

The pressure at the center of a tornado is usually 13 pounds per square inch. However, inside the house, the air pressure is normal, about 15 pounds per square inch. The difference of 2 pounds per square inch between the inside and outside pressure may not seem like much. But suppose a tornado funnel passes over a small building that measures 20 by 10 by 10 feet. On each square inch of the building, there is 2 pounds of pressure from the inside that is not balanced by air pressure outside the building. On the ceiling, that adds up to an unbalanced pressure of 57, 600 pounds. The pressure on the four walls adds up to 172,800 pounds.

If windows are open in the building, some of the inside air will rush out through them. This will balance the pressure inside and outside the building. But if the windows are shut tightly, the enormous inside pressure may cause the building to burst.

Unfortunately, heavy rain and hail often occur in thunderstorms that later produce tornadoes. So people frequently shut all windows to protect their property. This may cause far worse damage later. For the same reason, tornado cellars must have an air vent. Otherwise, the cellar door might be blown out when a tornado passes over it

In line 16, the word "it" refers to ________

A. wind

B. hail

C. cellar door

D. air vent