KT HKll 6

TEST 6
I. Pick out the word that has the underlined part pronounced differently from the rest
1. a. symbol b. cycle c. skyscraper d. apply
2. a. soon b. good c. too d. food
3. a. submit b. succeed c. subway d. support
4. a. honest b. honour c. ghost d. house
5. a. plough b. cough c. laugh d. enough
II. Choose the correct answers
6. He likes beer and fried chicken, ______ is the reason ______ he is too fat.
a. which / when b. that / why c. who / where d. whose / whom
7. I ______ drink coffee.
a. used not to b. didn`t use to c. not used to d. a and b
8. He _____ hungry. He has just had lunch with me.
a. can`t be b. can`t have been c. couldn`t be d. couldn`t have been
9. Nancy got a scholarship to study abroad last school year. She _____ very happy.
a. must be b. must being c. must have be d. must have been
10. This is the only library ______ we can obtain scientific information.
a. where b. which c. that d. why
11. I`d rather you _____ to work late.
a. don`t go b. didn`t go c. not go d. not going
12. Tim was washing the clothes when the doorbell _____.
a. is ring b. rings c. was ringing d. rang
13. Never put ______ until tomorrow what you can do today.
a. off b. of c. on d. from
14. You have to study harder to _____ your classmates.
a. lose track of b. keep up with c. take care of d. put an end to
15. This puzzle is short, ______ difficult.
a. although b. either c. or d. but
III. Complete each sentence withthe correct form of the word given in the brackets
16. She has worked as an _____ for nearly ten years. (account)
17. All people spend money for _______ the same reason that they need to buy things. (exact)
18. It is not easy to change one`s _______. (believe)
19. Generally _______, learning a foreign language is interesting, but not easy. (speak)
20. Please tell me some _______ about the flight. (inform)
21. _______ is a common feeling that everybody gets whenever he is away from home. (homesick)
22. My father is old. He lives in _______. (retire)
23. There are many sources of _______ nowadays. (pollute)
24. We are never in _______. (agree)
25. They are _______ workers. (skill)
IV. Fill in each numbered blank with ONE suitable word
A lack (26) _______ clothing may indicate an absence of status (27) _______ social position. In ancient Egypt, for example, children - who have (28) _______ social status - wore no clothes (29) _______ they were about twelve years old. In ancient times in Peru, South America, the Mohica believed (30) _______ if an enemy had (31) _______ clothes, he also had no status or power. (32) _______ many societies, furthermore, only royalty could (33) _______ certain colors, styles, and types of cloth. (34) _______ several hundred years in Europe, for example, fur, purple silk or gold cloth could (35) _______ used only by royal families.
V. Readthe passage carefully and then answer the questions
To understand what a laser is, one has to understand how light is generated. Light comes from the electrons that surround the nucleus of every normal atom. When the atom of sodium is in its unexcited state, the electrons that surround the sodium nucleus are in their normal energy levels. If this sodium atom absorbs some energy from outside, one or more of the electrons will jump from a low energy level and orbit to a higher energy level and orbit. The atom then remains in this excited state until it is able to release the energy that it has temporarily stored. When the release occurs the electrons in the high energy level fall back to the low energy level. But as it does so, it emits the extra energy as a pulse that we may see as light. A possible jump of each of the electrons round the sodium nucleus has an exact amount or quantum of energy associated with it.
The word "LASER" is an acronym. The letters of the word come from "Light Amplified Stimulated Emission of Radiation". The