第1题:
an advertisement of an airline
a notice for airline passengers
a schedule of an international flight
an introduction to an airline company
第2题:
Especially
Usually
Generally
Fortunately
第3题:
young
energetic
strong
necessary
第4题:
Most of them become blind.
Most of them become deaf.
Most of them die.
Most of them are still alive.
第5题:
乙烷
丙烷
丁烷
2,2—二甲基丙烷
第6题:
whose
whom
who
which
第7题:
甲是乙的必要条件,但不是乙的充分条件
甲是乙的充分条件,但不是乙的必要条件
甲不是乙的充分条件,也不是乙的必要条件
甲是乙的充分必要条件
第8题:
第9题:
how the bad rice came
where the bad rice came from
how did the bad rice come
where did the bad rice come from
第10题:
第11题:
第12题:
didn’t you
couldn’t you
hadn’t you
shouldn’t you
第13题:
第14题:
第15题:
H2
NH3
CO2
O2
第16题:
when you will travel
when will you travel
when you travelled
when did you travel
第17题:
By teaching him how to draw
By asking teachers for advice
By describing everything to him
By sending him to his dream school
第18题:
only some of the students finished Exercise 8
there was no Exercise 8 in Lesson 1
the students found and finished Exercise 8
all the students wanted to be honest
第19题:
to charge
charge
charged
having charged
第20题:
by
beyond
within
from
第21题:
陆地方向
海上方向
空中方向
第22题:
kind
poor
strong
lazy
第23题:
第24题: