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.
When did farmers first begin using scarecrows in their fields？
A. Last year.
B. 10 years ago.
C. 2000 years ago.
D. Every fall.
“上游”生产过程的部分产出都被用作“下游”生产过程的一种中间投入，则可以认为上下游生产过程是一体化的。()
A. 正确
B. 错误
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