[A] and [B] for [C] or [D] the

B.含有这两个词的文献集合

C.含有检索词A而不含检索词B的文献

D.含有检索词B而不含检索词A的文献

[B] self-oriented

[C] self-conscious

[D] self-satisfied

[A] The roots of the Industrial Revolution.

[B] The advantages of using wood in the colonies.

[C] The difference between charcoal iron and coke iron.

[D] The effects of an abundance of wood on the colonies.

[B] climb

[C] make

[D] arrive

[B] as

[C] since

[D] though

[A] it can be relied on to detect criminals in all cases

[B] it is sometimes the only way to resolve court cases

[C] it is sometimes the only clue for police investigation

[D] it is more reliable than physical evidences to a crime

[A] he is of the same race as the suspect

[B] he is shown photos of many similar faces

[C] he lacks the professional help from the police

[D] he has a small number of suspects in the lineup