لطلاب اللغة الانجليزية lmd سنة أولى .L.S. 2024.

A

People say that some water is ` hard ´ . When they say this they mean that

It does not lather easily and quickly with soap. The reason for this is that

it has in it very small amounts of calcium compound from the rocks in the

carth through which it has flowed.

5 People say rain- water is ` soft ´ , because it lathers easily and quickly

with soap. And the reason is that it does not have in it any calcium com-

pound. The water from reservoirs does not usually have much calcium

compound in it, but well-water often does , and so people that it is ` hard ´.

When we boil hard water in a pan , a layer of hard substance , which is

10 Called ` fur ´, is thrown out of the water and left behind on the bottom and

Sides of the pan. This is made of the limestone which is made when the

Water is heated, and is thrown out and left behind as the water changes

To staem.

B

(1) some water is said to be ` hard ´ .(2) by this is mean that it does not lather

(3) readily with soap. The reason for this is that it (4)contains traces of

calcium compound. from the rocks in the carth through which it has

flowed.

5 (1) rain- water is said to be ` soft ´ , because it lathers (4) readily with soap

and the reason is that it does not(5) generally (4) contains much calcium com-

pound. but well-water (6) frequently does, and (7) consequently (1) it is said

to be ` hard ´.

10 When a pan of hard water is boiled, a layer of hard substance,

(8)consists of the limestone which is (11)formed when the water is heated,

and is (9)deposited as the water (12)evaporates.

Exercice1 find the way in which the words and phrases italicised in Text A are

Expressed in Text B:

1 People say that some water is 7 so

2 When they say this they mean 8 which is called

3 easily and quickly 9 thrown out the water and left b

4 has in it very small amounts left behind

5 usually 10 is made of

6 often 11 made

12 changes to steam