【单选题】Ships are ____ than planes that people take them mainly for pleasure. A. very much slower B. so much slower C. too much slower D. much more slower
【单选题】下图中的光电元件是(),其工作时线圈处于()状态。
【简答题】在Hg(NO 3 ) 2 溶液中逐滴加入KI溶液,开始有()色()生成
【单选题】与大豆相比,大豆发芽后能增加的一种营养素是( )
【单选题】满足理想气体 pv n =常数且 n =±∞的过程是 。
【单选题】It is implied that the process of aging is ______.
A.
slower in a healthy man
B.
slower in a healthy woman
C.
at the same rate with men and women
D.
hard to compare in terms of sex
【判断题】如果某个字段在定义时添加了非空约束,但没有添加default约束,那么插入新记录时就必须为该字段赋值,否则数据库系统会提示错误。
【单选题】形成性评价的内涵不包括
B.
通过教师评价、学生自评、互评,对学习情况进行持续性的监控