What is the goal of the SETI program?

The goal is to find other civilization in the universes.

EXPANSION Units 1–3

1. Language Review

A. Complete each sentence with other, others, or another.

1. I’m almost done with this soda. Can you please bring me another?
2. Some predators wait for their prey to come to them. other predators chase their prey.
3. Don is so materialistic. Although he already has two cars, he’s going to buy another.
4. One lucrative crop for many farmers is soy beans. Another is corn.
5. He excels in football, track, gymnastics, and a handful of other sports.
6. That store is a chain. There are a few in Spain and Italy and others in France and Germany.
7. One of the most famous children’s books by Dr. Seuss is The Cat in the Hat. others are One Fish Two Fish Red Fish Blue Fish and Horton Hatches the Egg.
8. One option would be to spend the money on a vacation. another would be to put it in a savings account.

B. Rewrite the underlined sentences with used to, be used to, or would.

1. When he lived in Riyadh, he often drove by Faisaliah Tower.

When he lived in Riyadh, he often used to drive by Faisaliah Tower.

2. Bobby felt lonely when his sister went to college. It felt strange not having her in the house.

He was used to having her in the house.

3. This coffee shop is where I studied when I was in college.

I used to study at this coffee shop when I was in college.

4. He’s much more materialistic now than he was when he was a teenager.

He is much more materialistic now than he used to be when he was a teenager.

5. The cough was so persistent, after a while she didn’t even notice it.

The cough was so persistent, after a while she was a used to it.

6. When I was younger, I exercised rigorously. Now I hardly exercise at all.

When I was younger, I would exercise rigorously. / When I was younger, I used to exercise rigorously.

7. I usually shop in small stores. I don’t usually shop in chain stores.

I am not used to shopping in chain stores.

8. He has always loved electronics. When he was a child, he and his dad built circuit boards together.

When he was a child, he and his dad would build circuit boards together./ When he was a child, he and his dad used to build circuit boards together.

C. Answer and discuss these questions about life in the year 2050.

1. Do you think scientists will have found a cure for cancer?

I don't think scientists will have found a cure for cancer.

2. Do you think space travel will have become commonplace?

I don't think space travel will have become commonplace.

3. Do you think the world will have become more peaceful?

I do not think that the world will have become more peaceful.

4. Do you think we will have started using something other than gas to run our cars?

I do think that we will have started using something other than gas to run our cars.

5. Do you think global warming will have slowed down?

I do not think that global warming will have slowed down.

6. Do you think engineers will have developed a computer capable of thought?

I do not think that engineers will have developed a computer capable of thought.

7. Do you think scientists will have contacted life on other planets?

I don't think that scientists will have contacted life on other planets.

D. Look at the pictures of Asma below. Write sentences about her, using the following grammar points from Units 1–3.

used to The years ago, Asma used to eat unhealthy food.

was going to She was going to be a history professor.

would She would eat while she was studying.

future perfect In ten years, Asma will have gotten married.

future perfect progressive Asma will have become a history professor.

future with dependent time clauses In ten years, Asma will have been eating healthier foods for a long time.

2. Reading

After Reading

A. Match each word to its synonym.

1. b diameter
2. d detected
3. c limitations
4. e monitored
5. f optimistic
6. a unintentionally
7. g vast

B. Answer the questions.

1. What is the goal of the SETI program?

The goal is to find other civilization in the universes.

2. Why haven’t any signals been picked up from other planets yet?

Only a small number of stars in the universe have been monitored for signals.

3. Why are SETI scientists confident that they have a better chance of picking up signals in the future?

Technology is improving and volunteers add computing power to the search.

4. How do we send signals into space?

We send signals into space through radio and TV waves.

5. What is SETI@home?

SETI@home is a volunteer program in which people allow their computers to analyse data gathered from the Arecibo radio telescope.

3. Language Plus

Complete each sentence with an idiom shown. Be sure to put each idiom in the correct tense.

1. I just can’t find my glasses. Where in the world could they be?
2. After Jim won the tennis championships, he was on top of the world.
3. Dan and Warren have different views on everything. They are almost apart.
4. You need to stop worrying and quit carrying the weight of the world on your shoulders.
5. Frank is so happy with his success; he doesn’t seem aware of anything else. It’s like he in another world.
6. He graduated at the top of his class. He can do anything he wants with his life. The world is his oyster.

4. Writing

Complete each sentence with the correct commonly confused word.

1. The invention of the microwave made it possible to cook meals in less time.
2. I make fewer grammatical mistakes than I used to.
3. I don’t want to discuss this any further.