Variant 1 You could have come first and won the race if you … faster

28. From the descriptions in the passage, we can conclude that latex ...

A) is almost entirely pure rubber. B) is a hard substance similar to rubber.

C) is a by-product of rubber. D) must be a fairly thin, white liquid.

29. According to the passage untreated crude rubber is not used in industry, because ...

A) its milky colour is undesirable. B) it’s neither hard nor strong enough.

C) its content of sulphur carries a nasty odour. D) it lacks any kind of elasticity.

30. As is stated in the passage ...

A) the heat applied to the mixture should be high enough for rapid evaporation.

B) how hard or flexible the rubber becomes depends on its sulphur content.

C) the sulphur contained in the rubber should be extracted as much as possible.

D) the more wax is used, the harder and the more elastic the rubber becomes.

VARIANT 72

1. Is that the bookshop … they`ve also got a coffee?

A) whose B) which C) whom D) where