循序渐进原则就是指教学要按照学生认识发展的顺序去进行。( )
参考答案:错
科学家将男、女体细胞内的染色体进行整理,形成了下列的排序图,请分析回答:
(1)从图中可以看出,在人的体细胞中,染色体是______存在的.它主要由______和______组成.正常人的体细胞中的染色体有两类,与性别决定无关的是______,与性别决定有关的是______.
(2)根据图中细胞的染色体组成,可以判断,乙为______性的体细胞染色体组成.
(3)对先天性愚型患者进行染色体检查,可以看到患者比正常人多了一条21号染色体.医学上将此类病称为______.
Unsatisfied ______ with the payment, he took the job just to get some work experience. [ ]
A. as was he
B. as he was
C. as long as he was
D. was he as