Choose one word whose main stress is placed differently

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I. Choose ONE word whose main stress is placed differently.

1. A. impair                            B. unhurt                         C. effect                          D. insect

2. A. explorer                         B. accurate                      C. unhealthy                    D. immature

3. A. unnatural                       B. engineering                  C. impossible                   D. environment

4. A. unhelpful                        B. unlikely                        C. unforeseen                  D. unusual

5. A. imprecise                       B. imperfect                     C. impartial                      D. impassive

II. Complete the words under the pictures with un- or im-, then mark the stressed syllable in each word. Say the words aloud.

1. ______lock                        2. ______balance             3. ______patient              4. ______employed

5. ______comfortable             6. ______prison               7. ______tidy                   8. ______attractive

9. ______plant                       10. ______fair

III. Complete the sentences with the words in the box

benefits          create           discovery              explore             experiments

invention           observations          progress              Science           technology

1. My brother is very good at natural…………………………… subjects such as Chemistry and Physics.

2. Simply speaking……………………………, is the tools and machines that help to solve problems.

3. The scientific method is a way to ask and answer scientific questions by making …………………………… and doing experiments.

4. While scientists study how nature works, engineers …………………………… new things, such as Products, websites environments, and experiences.

5. In Science, you should repeat your…………………………… several times to make sure that the first results weren’t just an accident.

6. Scientific…………………………… brings us many conveniences and advanced machines, such as computers, automobiles, and so on.

7. There are many …………………………… of technology in the classroom, especially as students are becoming increasingly digitally literate.

8. The…………………………… of penicillin is very useful because it has saved lots of lives.

9. The key individual is responsible for the…………………………… of the double helix structure of DNA were Francis Crick and James Watson.

10. Scientists are planning to send people to…………………………… Mars in the near future.

IV. Complete the sentences with the correct form of the verbs in future tenses (be going to +V, future simple or future continuous).

1. That exercise looks difficult. I (help)_____________you

2. They (fly)____ to New York next summer holidays.

3. We (observe)______ Mars from the National Space Centre at this time next week.

4. People (travel)___ by flying car in the future.

5. Look at the clouds! It (rain) _________in a few minutes.

6. I promise I (not tell)_________ your secret to anyone.

7. They (test)_______________ the latest mode! of Iphone at 9 o’clock tomorrow

8. I  think they (invent)_________ a new building material next year.

9. We’ve already decided. We (not buy)  _________ a robot vacuum cleaner.

10. Goodbye, Ms. White. I (phone)_________ you as soon as I arrive home.