轻度有机磷中毒,胆碱脂酶活性下降到正常的
A.30%左右B.40%左右C.50%~70%D.70%~80%E.以上均不是
参考答案:C
3岁以前的婴幼儿是通过()进行学习的。
A.感官
B.抽象思考
C.逻辑思维
D.想象
Japan’s growing sales of technology ________ a major development in this area, and we can also see its progress in other aspects.
A.react
B.defend
C.represent
D.settle