Though the law will require emissions testing of all diesel vehicles, from

tractor trailers to excursion buses, it will have no effect on sport utility

vehicles, almost all of which are gasoline powered, and will not be sub-

jected to emissions-control standards as stringent as they are for

diesel-powered vehicles.

A.     powered, and will not be subjected to emissions-control standards as

stringent as they are for

B.      powered, and therefore not subjected to emissions-control standards

that are as stringent as those of

C.      powered and therefore not subject to emissions-control standards as

stringent as those for

D.     powered, which are not subject to emissions-control standards as

stringent as they are for

E.      powered and therefore they are not subject to emissions-control

standards as stringent as those of

                              Answer:c

已经看过前人讨论，我的问题是：首先be subject to 和 be subjected to有什么区别呢？

where is the site to see others discussion on this pro?

1.be subjected to

使经受,使遭受

On this test track, the standard production cars will be subjected to rough treatment deliberately. 
        在这个试验车道，标准汽车成品将接受有意的毁坏性测试。

2.be subject to

conj. 服从(以...为条件,须经,易受)

The above offer is made without engagement and all order will be subject to our write acceptance.

以上报盘为虚盘（无约束力），所有订货将以我方书面接受为准。