把分数 的分子扩大为原来的4倍,分母缩小为原来的 ,所得的分数比原来( )。 A . 扩大7倍 B . 缩小12倍 C . 不变 D . 扩大12倍 答案:D21、(2011·河南实验中学第一次月考)31. In
China, all the students work hard at school _________ going to university for
higher education in the future. .w.^w.k.&s.5*u.c.#om.
A. in the habit
of B. in the hope of
C. in search
of D. in
honor of