At a philosophy class a professor picked up a large empty glass jar and filled it with big rocks. he then asked the students if the jar was full. they 32 that it was. so the professor poured a box of pebbles into the jar and shook it lightly. the pebbles rolled into the open areas between the rocks. the students again considered the jar to be full. when the professor poured a box of sand into the jar it filled up the 33 open areas of the jar, which was really full at last. “now,” said the professor, “i want you to understand that this jar 34 your life. the rocks are the important things – your family, health, children – and if only they are present in your life, it will 35 be full. the pebbles are the other things that 36 – like your job, house, car. the sand is the small stuff.” “if you put the sand into the jar first,” he continued, “there is no room for the pebbles or the rocks. the same goes for your life. if you spend all your time and energy on the small stuff, you will never have room for anything important. 37 attention to the things that are critical to your happiness. play with your children, do sports, meet friends. there will always be time to work, clean the house, or fix the car. take care 38 the rocks first, set your priorities. the rest is just sand.” 32 1) told 2) spoke 3) said 4) talked 33 1) reflecting 2) remaining 3) rejecting 4) reclaiming 34 1)corresponds 2) exemplifies 3)indicates 4) represents 35 1) still 2) since 3) else 4) quite 36 1) value 2) signify 3) matter 4) respect 37 1) spend 2) make 3) take 4) pay 38 1) of 2) over 3) about 4) at

1) I want to ask her if she (practises) playing the piano in order to improve her skill.

2) If someone rings you up, I'll (tell) you at once.

3) I think I'll do it at the weekend when I (have got) a bit more time.

4) If the bird is disturbed, it (leaves) the nest.

5) Do you know when she (will be) back?

6) We'll have the party in the garden if the weather ... (is) good.

7) If I don't get enough sleep, I (get) a terrible headache.

8) I wonder if you (recognize) Bill whom you haven't seen for a long time.

9) What do you want to be when you (grow up)?

1. a

2. b

3. c ?

4. a

5. c

6. a

1. Mouse is a device to move the cursor or pointer on a display screen.

2. Because the connecting wire looks like a mouse tail.

3. Mice usually have two buttons and sometimes as many as three, which have different functions depending on what program is running.

4. The mouse was invented by Douglas Engelbart.

5. In 1963.

6. Stanford Research Center.

7. Mice can be:

1. Mechanical with a rubber or metal ball that can roll in all directions. Mechanical sensors in the mouse detect the direction the ball is rolling and move the screen pointer.

2. Optomechanical with optical sensors to detect motion of the ball.

3. Optical with a laser to detect the mouse’s movement. Optical mice have no mechanical moving parts but they are more expensive.

4. Cordless infrared mice send infrared or radio waves to communicate with the computer.

3

1. There are men on bicycles.

2. These stories are very interesting.

3. These children are my sons.

4.

1. Usually the classes begin at 9 o’clock.

2. John is playing a game of tennis. He has been playing for 2 hours.

3. Now Lena is waiting for Dennis at the museum.