饲料水溶性氯化物的测定方法(仲裁法)中,首先要进行()准确吸取氯化物提取。
A、滴定
B、氯化物的提取
C、稀释
D、定容
参考答案:B
— Little Tom seemed to have much on his mind, what's up?
— He was caught ________ in the final exam this afternoon. [ ]
A. cheat
B. cheated
C. cheating
D. to cheat
人类活动对昆虫的影响。