2.Teachers need to be __ the emotional,intellectual,and physical changes that young adults experience.

2.Teachers need to be __ the emotional,intellectual,and physical changes that young adults experience.
A.aware of B.understood of
C.known of D.clear of
3.Each culture has its own __ features.
A.distinct B.different
C.distinctive D.particular
4.Teenagers need the __ that comes from achieving success and knowing that their accomplishments are acknowledged by others.
A.assistance B.guidance
C.confidence D.tolerance
5.In Britain,ministers (大臣) are appointed by the Queen on the __of the Prime Minister.
A.suggestion B.urge
C.advice D.recommendation
6.He finally gave in to an __ urge to smoke and lit up a cigarette.
A.overcoming
B.overwhelming
C.defeating
D.conquering
7.He took the lead,and __ it until the end of the race.
A.attain B.retain
C.maintain D.contain
8.The teacher asked us to get online to search for __ reports of the Watergate Scandal (水门事件丑闻).
A.contemporary
B.temporary
C.current
D.modern
9.The girl __ the alarm (发出警报) the moment she saw the smoking rising from the cottage.
A.rose B.raised
C.arose D.increased
10.The study ___ the pattern of shocks delivered by automatic heart defibrillators (起搏器) implanted in (植入) 347 patients.
A.estimated B.calculated
C.evaluated D.assessed
11.No longer feeling up to his work,the manager had no choice but to__ from his position.
A.resign B.remove
C.withdraw D.move
12.Having been found __ of the kidnapping,the accused was given a severe sentence.
A.innocent B.naive
C.ignorant D.guilty
13.My parents have been __ pressure on me to break up with my boyfriend.
A.executing B.exercising
C.exhibiting D.exerting
14.The republication of the poet’s most recent works will certainly __ his national reputation.
A.emphasize B.strengthen
C.enlarge D.enhance
15.Fierce competition forced some companies to produce products cheaply.__ the quality problem was getting increasingly serious.
A.Frequently B.Consequently
C.Consciously D.Overwhelmingly