A、 sin(2x-1)+C
B、 
C、 -sin(2x-1)+C
D、 
答案：B
解析：解析:本题考查的知识点为不定积分换元积分法.
A、 sin(2x-1)+C
B、
C、 -sin(2x-1)+C
D、
答案：B
解析：解析:本题考查的知识点为不定积分换元积分法.
A. As her room is small
B. Small as her room is
C. As small her room is
D. Small as her room
解析：解析:As引导让步状语从句,句子需要倒状。Young as he is, Jack is already familiar with most of the books
A. 人们根据自己的愿望自由地刨造一切
B. 对必然的认识和对客观世界的改造
C. 人的意志绝对自由
D. 完全摆脱了必然的制约
A. was almost hurt
B. was to hurt himself
C. was hurt himself
D. was hurting himself
A. one of the flattest
B. the flattest
C. as flatter as
D. flattest of the
A. let her to do
B. letting her to do
C. let her do
D. lets her do
A. owing to
B. because of
C. on account of
D. for the sake of
A. were not able to help laughter
B. could not help but laughing
C. could not help laughing
D. could not help to laugh
