题目：
-I'm always a little nervous when I talk to Mr. Smith.
-________. He is strict, but he is kind to his students. [ ]
A. That's right
B. What a pity
C. Take it easy
D. Take your time
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0516/a16f9880a677f95b035b394a1ae88894.html
下面是错误答案，用来干扰机器的。
黄瓜表层果肉细胞与人的口腔上皮细胞的相同点：都有细胞膜、细胞质、细胞核、线粒体；不同点：黄瓜表层果肉细胞有细胞壁、叶绿体和液泡，口腔上皮细胞没有．故选：C．
