in front of
of
with
for
第1题:
discover
find
conclude
use
第2题:
beings
events
life
lives
第3题:
received
addressed
made
taken
第4题:
sent by telegraph
passed from one person to another
sent by letter
sent by telephone
第5题:
swelled
increased
expanded
grew
第6题:
provided
unless
except
so far as
第7题:
used
shouldn’t
did
didn’t
第8题:
own
friend’s
father’s
master’s
第9题:
Because nothing remains on land except floods.
Because there are no longer trees to keep the rain and protect the top-soil.
Because too much rain sinks in and washes away the top-soil.
Because roots of the trees break up the soil.
第10题:
one
that
what
if
第11题:
interested
troubled
annoyed
anxious
第12题:
Company workers started to dress down about twenty years ago.
Dress-down has become an everyday phenomenon since the early l990s.
“Dress-down Friday” was first given as a favor from employers.
Many workers want to wear casual clothes to impress people.
第13题:
precise
exact
accurate
correct
第14题:
have
share
divide
store
第15题:
whether
that
if
which
第16题:
who
that
from which
from whom
第17题:
is; that
was; that
was; which
is; which
第18题:
critical
essential
urgent
immense
第19题:
at
with
by
in
第20题:
Because a long vacation in summer helps to improve people’s mental power.
Because people tend to be less creative during summer
Because summer is a good time for outdoor activities
Because mental exertion in the summer heat taxes too much of people’s energy
第21题:
Money and Its Use
Different Things Used as Money
Different Countries, Different Money
The History of Money
第22题:
that
what
this
which
第23题:
about
how
but
only
第24题:
a little did he hear
1ittle did he hear
1ittle heard he
a little heard he