我是一名机械专业的专科生，面对严峻的就业形势，...

《马伶传》中“以分宜教分宜”的意思是（ ）

A.用现实生活中的严嵩教舞台上的严嵩
B.用现实生活中的分宜人教舞台上的分宜人
C.用现实生活中的顾秉谦教舞台上的顾秉谦
D.用现实生活中的奸臣（顾秉谦）教舞台上的奸臣（严嵩）

It was recommended that they__for the doctor.

A.has waited
B.waited
C.should wait
D.should have waited

The destruction of habitats(栖息地)all over the world is the primary reason species are?becoming extinct(灭绝)or endangered．Houses,highways,dams,industrial buildings,and?ever-spreading farms now dominate?21?formerly occupied by forests,deserts,and wetlands．22?the beginning of European settlement in America,23,
over 65,000,000 acres of?wetlands have been drained．One million acres alone vanished
24?1985 and 1995．
Habitat destruction can be?25?or it can be subtle,occurring over a
26?period of time?without being noticed．27?such as sewage from cities and chemical runoff fromfarms,can change?the?28?and quantity of water in streams and rivers．To?29?living in a delicately balanced?habitat,this disturbance can be as
30?as the clear-cutting of a rainforest．
31?remaining habitats are carved into smaller and smaller pockets or islands,remaining?species are forced to exist in these?32?areas,which causes further habitat?33?These?species become less adaptable to environmental?34；in fact,they become?35?endangered．Scientists believe that when a habitat is cut by 90%,one-half of its plants,animals and insects will?become extinct．
第28题的答案是（ ）

A.Amount
B.purity
C.nature
D.quality