Many historians are studying the _____ of civilization.

Effective study skills andstrategies are the _______ of effective learning.

The study of the way speech sounds are made by the vocal organs belongs to ______.A．audito

The study of the way speech sounds are made by the vocal organs belongs to ______.A．audito

Many of them are______of the original settlers.A．descendantsB．forefathersC．ancestorsD．mast

These results are______with the findings of the previous study.A．consistentB．confidentC．co

All the President’s Men ______one of the important books for historians who study the W