Unit 46
a who b - c which d who e which f -
g which h - iwhich j-
Unit 47
a Inthe 14th century, IbnBattuta, the Moroccan
explorer, travelled more than 120,000 km on his
journeys, which would be difficult even for a
modern traveller. b Inthe early years of the 15th
cen tury, European sailors usually refused to sail
further south than the Canary Islands, which was
understandable, as they believed that it was too
dangerous to go further. c In1487, Bartolemeu
Dias and his ships reached the Indian Ocean, which
was a great achievement for the time. d In 150
AD, the Greek geographer Ptolemy made a map of
the world showing two lakes in Africa as the sources
of the Nile, which was remarkable, considering
that modern European explorers did not discover
these lakes until the 1860s. e Nobody thought
that Marco Polo's book about China was true,
which was not surprising because some parts of his
story were so unbelievable. fArchaeologists have
found the remains of a Viking settlement in North
America, which proves that the Vikings we re the first
Europeans to reach America.
Unit 48
a You need a balI, two teams and goal posts for
playing football. To play football, you need a
balI, two teams and goal posts. You need a balI,
two teams and goal posts so that you can play
football.
b You need bats, a hard balI and two teams for
playing baseball. To play baseball, you need a
hard balI, two teams and bats. You need a hard
balI, two teams and bats so that you can play
baseball.
c You need a balI, a table and smalI bats for
playing ping pong. To play ping pong, you need
a balI, a table and smalI bats. You need a balI, a
table and smalI bats so that you can play ping
pong.
d You need a puck, an ice rink and ice skates for
playing ice hockey. To play ice hockey, you need
a puck, an ice rink and ice skates. You need a
puck, an ice rink and ice skates so that you can
play ice hockey.
e You need a balI, horses and mallets for playing
polo. To play polo, you need a balI, horses and
mallets. You need a ball, horses and mallets so
that you can play polo.