题目内容

The study shows that the classic warning signs of heart attack are ______.

A. not typical in women patients
B. obvious in all the patients with heart disease
C. rarely found in both male and female patients
D. often seen a month or more before the attack

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洛伦茨曲线越偏离右下角,反映市场集中程度越高。()

A. 正确
B. 错误

下列数据结构中,属于非线性结构的是

A. 循环队列
B. 循环队列
C. 二叉树
D. 带链栈

张伯伦认为,现实的市场既存在竞争因素,也存在垄断因素,介于完全竞争和纯粹垄断之间,形成了“垄断竞争”格局。()

A. 正确
B. 错误

Why wasn't Mrs. Johnson upset with Jan for drawing a picture instead of coloring?

A. She thought Jan's drawing was acceptable.
B. She felt her duty was to encourage pupils.
C. She liked his drawing very much.
D. She found Jon was good at drawing.

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