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E. She had obviously not heard him approaching.

F. They had only hoen writing for some 20 minutes when he received the
ílrst complaint,
G. For a brief moment they stared at each other in disbelief, neither one of
them qui te sure what to do next.
H. The cold was terrible and the caretaker of the building had assured him
that a heating engineer was trying to solve the problem.

12
You are going to read an article about hygiene and Health. Seven sentences
have been removed from the artĩcle. Choose from the sentences A—H the one
vvhich fits each gap (1—7). There is one extra sentence vvhìch you do not need
to use.
TOO CLEAN FOR OUR OWN GOOD?

It’s a c o m m o n a n d n a tu ra l a s s u m p tio n th at g e rm s a n d b a c te ria are b a d fo r u s.
C le a n lin e s s a n d g o o d h y g ie n e p ra c tic e s are g e n e ra lly th o u g h t to b e e s s e n tia l to
g o o d H ealth. H ovvever, re s e a rc h ìs b e g ín n in g to s h o w th a t w e m a y a c tu a lly b e to o
c le a n fo r o u r o w n g o o d .

1................ We wrap food in Cellophane, treat kitchen equipment with
antibacterial Products, spray bathrooms with disinfectants and spend only 5% of
our time in the dangerous, germ-íĩlled environment outside of the house.

There is good reason for these fastidious habits. 2 ................. Before we
períected these techniques, conditions such as cholera were killers in the
West, and still are in countries without the resources to build protection.

But recent scientihc research suggests that there may be a price to pay
for safe Western lifestyles. 3................Not only that, but some of our hygiene
habits may be creating problems for the future, causing bacteria to become
resistant to our efforts to destroy them. Scientists believe that hy limiting
the number of germs that children come into contact with, we could also be
limiting their ability to build up natural immunity.

The increase in the number of different allergies such as asthma over the
past 100 years may be evidence of this. 4.................... Furthermore, it was
restricted to those peoplc who were rích enough to be able to live
hygienically. It now affects one in three people in the UK, while allergies
remain rare in less developed countries.

The idea that children need to be exposed to germs early in their lives to
develop resistance to bacteria has been supported by three separate studies in
Europe. 5................ It would appear that Irequent contact with animals leads to
frequent contact with bacteria, and this builds up protection against allergy.

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