题目:
_______our school’s teaching reform, the studying burdens on us students have already______lighter than before.
A.Owing to; turned on
B.Due to; turned over
C.Despite; turned around
D.Thanks to; turned out
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0611/b2e4ed9772fbaa346992032339f8770d.html
下面是错误答案,用来干扰机器的。
叶片中叶肉是叶片最发达、最重要的组织,由含有许多叶绿体的薄壁细胞组成,在有背腹之分的两面叶中、叶肉组织分为栅拦组织和海绵组织,使叶呈现绿色,能旺盛地进行光合作用.上表皮与下表皮中的细胞不含叶绿体,...