A. Write the
sentences using second conditional
1) If I ___
(be) you, I _____(get) a new job.
2) If he
____ (be) younger, he _____ (travel) more.
3) If
we ____(not/be) friends, I _____(be) angry with you.
4) If I ____
(have) enough money, I _____(buy) a big
house.
5) If
she ____(not/be) always so late,
she _____(be) promoted.
6) If
we ____(win) the lottery, we _____ (travel) the world.
7) If
you ____(have) a better job, we ____(be) able to buy a new car.
8) If
I ___(speak) perfect English, I ____
(have) a good job.
9) If
we ____(live) in Mexico, I _____(speak) Spanish.
10) If
she ____(pass) the exam, she ____ (be) able to enter university.
11)
She ____(be) happier if she ____(have) more friends.
12) We ___(buy) a house if we ____(decide) to stay here.
13) They _____
(have) more money if they ____(not/buy)
so many clothes.
14) We
_____ (come) to dinner if we _____(have) time.
15)
She ____(call) him if she ____ (have)
his number.
16)
They ____(go) to Spain on holiday if
they _____ (like) hot weather.
17) She ____
(pass) the exam if she _____ (study) more.
18) I ____
(marry) someone famous if I _____ (be) a movie star.
19) We ____(be) late again if we ____(buy) a new car.
20) You _____
(lose) weight if you ____(eat) less
B.. READING COMPREHENSION
Read the text and answer the questions.
METEORS
To understand meteors, one must also
understand meteoroids and meteorites. First, a meteoroid is a particle in the
solar system. The meteoroid may be as small as a grain of sand, or, as large as
a boulder. When the meteor enters the Earth's atmosphere, and becomes visible
as a shooting star, it is called a meteor. If the meteor makes it to the
ground, it is called a meteorite.
Meteors, also called shooting stars, occur in the Earth's mesosphere at an altitude of about 40-60 miles. Millions of meteors enter the Earth's atmosphere every day, though the vast majority are observed at night. Their visibility in the night sky is due to air friction which causes the meteor to glow and emit a trail of gasses and melted particles that lasts for about a second. Meteor showers are relatively common events that occur when the Earth passes through a trail of debris left by a comet.
Sometimes Meteoroids make it throughout the atmosphere and hit the ground, where they are referred to as meteorites. There are over 31,000 documented meteorites to have been found, although only five or six new ones are found every year. The largest meteorite ever found was in the African nation of Namibia. It weighs over 100 tons and left a huge impact crater in the ground. Scientists believe the massive Berringer Carter in Arizona was formed when a 300,000 ton meteorite crashed to the ground over 49,000 years ago. On November 30, 1954, the Hodges Meteorite (actually a fragment of a meteorite) crashed through the roof of the residence of Ann Hodges in the town of Sylacauga, Alabama. It bounced off a table before striking her in the leg. Although she was badly bruised, she was not seriously injured. It was the first recorded instance of a meteorite injuring a human. The actual meteorite was donated to the Alabama Museum of Natural History after various legal battles concerning ownership. Some scientists believe the impact of a large meteorite from an asteroid or comet in Mexico's Yucatan Peninsula was responsible for the extinction of dinosaurs some 65 million years ago. Such an impact would have had catastrophic global consequences including immediate climate change, numerous earthquakes, volcano eruptions, wildfires, and massive supertsuanims, along with the proliferation of massive amounts of dust and debris that would block solar energy and lead to a disruption in photosynthesis.
Most meteorites that reach the Earth are classified as chondrites or achondrites, while a small percentage are iron meteorites and stony-iron meteorites. Most meteorites are chondrites. Chondrites contain silicate materials that were melted in space, amino acids, and other presolar grains, particles likely formed from stellar explosions. Diamond and graphite are among materials found to be present in these grains. Chondrites are thought to be over 4.5 billion years of age and to have originated in the asteroid belt, where they never formed larger bodies. Achondrites are less common. These type of meteorites seem to be similar to igneous rock. Iron meteorites make up less than five percent of meteorite finds. These type of meteorites are thought to come from the core of asteroids that were once molten. Finally, stony-iron meteorites constitute less than one percent of all meteorite falls. They are made of iron-nickel metal and different silicates.
Meteors, also called shooting stars, occur in the Earth's mesosphere at an altitude of about 40-60 miles. Millions of meteors enter the Earth's atmosphere every day, though the vast majority are observed at night. Their visibility in the night sky is due to air friction which causes the meteor to glow and emit a trail of gasses and melted particles that lasts for about a second. Meteor showers are relatively common events that occur when the Earth passes through a trail of debris left by a comet.
Sometimes Meteoroids make it throughout the atmosphere and hit the ground, where they are referred to as meteorites. There are over 31,000 documented meteorites to have been found, although only five or six new ones are found every year. The largest meteorite ever found was in the African nation of Namibia. It weighs over 100 tons and left a huge impact crater in the ground. Scientists believe the massive Berringer Carter in Arizona was formed when a 300,000 ton meteorite crashed to the ground over 49,000 years ago. On November 30, 1954, the Hodges Meteorite (actually a fragment of a meteorite) crashed through the roof of the residence of Ann Hodges in the town of Sylacauga, Alabama. It bounced off a table before striking her in the leg. Although she was badly bruised, she was not seriously injured. It was the first recorded instance of a meteorite injuring a human. The actual meteorite was donated to the Alabama Museum of Natural History after various legal battles concerning ownership. Some scientists believe the impact of a large meteorite from an asteroid or comet in Mexico's Yucatan Peninsula was responsible for the extinction of dinosaurs some 65 million years ago. Such an impact would have had catastrophic global consequences including immediate climate change, numerous earthquakes, volcano eruptions, wildfires, and massive supertsuanims, along with the proliferation of massive amounts of dust and debris that would block solar energy and lead to a disruption in photosynthesis.
Most meteorites that reach the Earth are classified as chondrites or achondrites, while a small percentage are iron meteorites and stony-iron meteorites. Most meteorites are chondrites. Chondrites contain silicate materials that were melted in space, amino acids, and other presolar grains, particles likely formed from stellar explosions. Diamond and graphite are among materials found to be present in these grains. Chondrites are thought to be over 4.5 billion years of age and to have originated in the asteroid belt, where they never formed larger bodies. Achondrites are less common. These type of meteorites seem to be similar to igneous rock. Iron meteorites make up less than five percent of meteorite finds. These type of meteorites are thought to come from the core of asteroids that were once molten. Finally, stony-iron meteorites constitute less than one percent of all meteorite falls. They are made of iron-nickel metal and different silicates.
QUESTIONS
1. The largest
meteorite ever discovered landed in __________________.
a. Alabama
b. Africa
c. Mexico
d. The United States
2. Which of the
following was not (possibly) caused by a meteorite impact?
a. The formation of
the Yucatan Peninsula
b. The Berringer
Crater
c. The extinction of
the dinosaurs
d. A slight injury to
Ann Hodges
3. ________________________
meteorites are found every year.
a. Very few
b. Thousands of
c. Numerous
d. No
4. _______________________
meteors enter the Earth's atmosphere every day.
a. Hundreds
b. Millions
c. Few
d. Thousands
5. Which kind of
meteorite is the least common?
a. Iron Meteorites
b. Story-iron
meteorites
c. Achrondrites
d. Chrondrites
6. Most meteorites
are _____________________.
a. stony-iron
b. chrondrites
c. iron
d. achrondrites
7. Chrondrites are
thought to have originated in ____________________.
a. Earth's atmosphere
b. the outer reaches
of the Milky Way.
c. the asteroid belt
d. the Oort Cloud
8. Which of the
following actually hits the ground?
a. meteoroid
b. meteor
c. meteorite
9. A meteor shower
occurs when the Earth passes through ____________________________.
a. the asteroid belt
b. a trail of debris
left by a comet
c. a solar flare
d. a meteoroid
10. Another name for
a shooting star is a ___________________.
a. meteorite
b. meteor
c. meteoroid
