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1. When was the Earth created ?
--> the Earth was created 4.7 billions years ago.
2. How is the Earth ?
--> the Earth is very close to that of a sphere, not perfectly spherical.
3 What main elements does the Earth include ?
--> the Earth includes 148,939,100 km2 (29.2 %) is land and 361,126,400 km2 (70.8 %) is water.
4. What are the places of the axis of rotation intersects the Earth's surface called?
--> the places of...surface are called as the poles, one of them is called the North Pole and the other is known as the South Pole.
5. How long is a solar day completed?
--> a solar day is completed in 24 hours
VI. Read the passage carefully, then decide whether the following statement are true (T) or false (F).
Mars, commonly referred to as "the red planet," is the fourth planet from the sun. Its reddish color comes from the high amounts of iron oxide on its surfaco. Mars has surface features similar to those found on the moon and on Earth. It has ranges, volcanic fields, valleys, ice caps, canyons and deserts. Mars is much smaller than the Earth. It has approximately half the radius of Earth. Mars orbits the Sun a little further than Earth. Mars takes 686 days to orbit Sun. In other words, the orbital period of Mars is almost twice as long as Earth's orbital period. Many spacecrafts have attempted to visit Mars, the most notable of which was NASA's Mariner 4, the first to.visit in a fly-by in 1965. In 1976, Viking 1 and 2 became the first spacecrafts to conduct successful and sustained landings on Mars. They provided the first color photographs of the "red planet."
32. The red color of the Mars comes from the sand on its surface. F
33. The Earth is four times larger than Mars. F
34. It takes Mars much longer to orbit the Sun than it does Earth. T
35. Viking 1 and 2 were the first spacecrafts to visit Mars. F
36. The first color photographs of Mars were provided by Viking landers. T
23/ A. which B. that C. where D. when
24/ A. So B. Such C. That D. Many
25/ A. its B. it C. their D. theirs
26/ A. high B. low C. below D. above
27/ A. gentle B. violent C. terrible D. awful
28/ A. up B. on C. into D. onto
__T__ 29/ One good thing about a tornado is that it does not last long
__F__ 30/ Tornadoes over water are called funnels.
__F__ 31/ The annually number of tornadoes in the United States is about one hundred.
__T__ 32/ There are about two hundred tornadoes in one year in America
The world ocean of are so vast that they can cope with the present levels (pollute)___pollution_______(1)However, little is known about the long term effects of such slow poisoning. The most serious problem of modern time is that man is destroying the earth's (2)___natural______ (nature) resources and trasforming huge areas into wasteland. As a result, it is becoming (extreme)__extremely____(3) difficult to grow enough (4)__to feed_____(feed) the world's rapidly (5)___increasing___( increase) population. A way of protecting all the wildlife on the earth must also be (6)__found_______(find) as many species are in (7) ____danger___(dangerous) of disappearing completely from the face of the earth. The danger, however, are not confine (8)_____solely_____(sole) to the land and the sea. The smoke in the atmosphere, for example, is increasing so mu sunlight has been (9)____reduced_____(reduce) in many cities. Man's whole (eavironmental) ____environment____ (10)is being changed in a serious way
The world’s oceans are so vast that they .can.... cope with the present level of pollution. However, little is known about the long-term effects of .such... slow poisoning. The most serious problem of modern time is .that.... man is destroying the earth’s natural resources and transforming huge areas into.... wasteland. As a result, it is becoming extremely difficult to grow enough ..to... feed the world’s rapidly increasing population. A way of protecting all the wildlife on the earth must also be found.as.... many species are in danger of disappearing completely..from... the surface of the earth. The dangers, ..however..., are not confined solely to the land and the sea.The smoke in the atmosphere, for example, is increasing so...much.. that the amount of sunlight has reduced in many cities. Man’s ..... environment is being changed in a serious way.
III. Read the passage below and answer each of questions
Tropical rain forests are found in Amazon region of south America, central America, Africa, and South and Southeast Asia. Rain forests are very important to the world’s climate. The Amazon rain forest alone receives about 30 to 40 % of the total rainfall on the earth and products about the same percentage of the world’s oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life. Saving our rain forests is an international problem. One country, or even a few countries can not solve the problem alone. The nations of the world must work together to find a solution before it is too late
1. Where are the rain forests found?
They are found in Amazon region of south America, central America, Africa, and South and Southeast Asia.
2. How much percent of the would's oxygen do the Amazon rain forest produce?
It produces about 30 to 40 percent of the world's oxygen.
3.How will the decrreasing size ò rain forests afect the climate on the earth?
It will make the climate on the Earth uncomfortable or even dangerous for life.4.Is saving our rain forests only a national problem?
No, it isn't.
1. It is "Living Planet Report".
2. The WWF said the earth is losing biodiversity at a rate seen in extinction.
3. They said the decline in wildlife was because of exploding human sonsumption.
4. The article said trees were being cut down for beef.
5. The article said animals had lost habitat.
5. The
1. It was created about 4.7 billion years ago.
2. Its shape is very close to that of a sphere, not perfectly spherical.
3. They are land and water.
4. They are the North Pole and the South Pole.
5. It's in 24 hours.
1. the Earth was created 4.7 billions years ago.
2. the Earth is very close to that of a sphere, not perfectly spherical.
3. the Earth includes 148,939,100 km2 (29.2 %) is land and 361,126,400 km2 (70.8 %) is water.
4. the places of...surface are called as the poles, one of them is called the North Pole and the other is known as the South Pole.
5. a solar day is completed in 24 hours