无标准答案的 [L1,L2（部分)]L11.Choose the correct word:b Boeing 747’s (is – are – were) manufactured in Seattle.e Your final test (is – was – will be) corrected by your teacher.f Faults (is – are – were) prevented by good maintenance.g That pilot (is – are –was) trained in Bremen and Phoenix,too.h Coffee (is – are – was) served on all Air China’s flights.j This material ( is – are – was) prepared by English teachers.k.Your salary ( is – are – was ) paid around

无标准答案的 [L1,L2（部分)]
L1
1.Choose the correct word:
b Boeing 747’s (is – are – were) manufactured in Seattle.
e Your final test (is – was – will be) corrected by your teacher.
f Faults (is – are – were) prevented by good maintenance.
g That pilot (is – are –was) trained in Bremen and Phoenix,too.
h Coffee (is – are – was) served on all Air China’s flights.
j This material ( is – are – was) prepared by English teachers.
k.Your salary ( is – are – was ) paid around the 25th of every month.
l.These examples ( are – were – will be) written to help you understand your
manuals.
4.Choose the answer with correct tense:
Runway 25 ( was / has been) extended.
When the defective part (was / has been) removed,the new part can be installed.
d.When the landing gear (was / has been ) retracted,the door close over it.
e.Many design modifications (were / have been) made to reduce aircraft noise.
g.The 737-300 (are / have been) replaced by 737-800.
h.The material (was / has been) ordered,but it (wasn’t / hasn’t been) delivered yet.
i.Flights to Berlin (have been / were) suspended.
L2
2.Choose the word(s) with the same meaning.More than one possibility may be correct.
a.consist of
a.comprise b.put together c.construct d.Connect
b Enable
a.able b.make possible c.make sure
d.make impossible
c Perception （ 这道题好像有点不对是吗?）
a.indicator b.test c.noticing d.mechanism
d Link
a.join b.line c.disconnect d.connect
e Unless
a.before b.if not c.when d.until
f.energize
a.turn on b.energy c.disengage d.impress