What the first giant calculators CANNOT

Since calculators were introduced, they ...people weak in math.

We should not rely on pocket calculators because ______.[A] they are not clever as our brains [C] they are harmful to our brains[B] we need to use our brains to prevent it from shrinking [D] we could not get enough practice on mathematics A: We should not rely on pocket calculators because ______. B: they are not clever as our brains C: they are harmful to our brains D: we need to use our brains to prevent it from shrinking [D] we could not get enough practice on mathematics

Allowing children to tinker freely with calculators can help them learn the basics of math and geometry. 未知类型：{'label': 'questionDesc', 'content': '请根据所给材料判断题干是否正确。', 'isMemberControl': 0, 'type': 181} 未知类型：{'label': 'source', 'content': '2021年6月 四级 卷一 仔细阅读1', 'isMemberControl': 0, 'type': 181}