【简答题】比一比,算一算. 180÷60+30 420÷(7×30) (90-36)×2 180×(60+30) 420÷7×30 90-36×2
【多选题】Ethical issues on gene therapy include:
A.
How can "good" and "bad" uses of gene therapy be distinguished?
B.
What actually happens when things go wrong?
C.
Who decides which traits are normal and which constitute a disability or disorder (deciding proper indications)?
D.
Do we have enough knowledge to make the right decisions?
【单选题】当用 1:2 的比例画一圆时,该圆的实际直径为 16mm ,此时圆的直径应标注为( )。
【单选题】One day, our dreams will()reality.
【单选题】()是市场营销4P组合的核心,是其他三项策略的基础。