Question

Pieces of bamboo or wood ________ books between 2^nd and 5^th century AD.
A. used to formed       B. used to form
C. were used to form    D. used to beforming

Answer 1

C

試題分析：句意：竹片或木片被用來制成書在公元2-5世紀(jì)。這里是短語be used to do被用來;used to do過去常常;根據(jù)句意故選C。
點(diǎn)評：本題難度適中。固定短語主要考查它們的意義，但是它們是在一定的語言環(huán)境下而出現(xiàn)的，所以考生必須能正確理解句子的句意。這里主要區(qū)別含有use的兩個固定短語。
即學(xué)即練：Jack ________ assist Mary in her lessons.
A. used to assist ed     B. used to assist
C. were used to assist  D. used to assisting
解析：B。句意：杰克過去常常幫助瑪麗學(xué)習(xí)功課。