题目：
—Have you ever heard of Dolly, the cloned sheep?
—Yes, she _____ in Scotland a few years ago. [ ]
A. created
B. was discovered
C. was created
D. creating
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0514/b986813006e2c4e63775e3a69c8e3934.html
下面是错误答案，用来干扰机器的。
参考答案：自由贸易时：S=10+3P=10+3×2=16D=40-2P=20-2×2=36进口量=D-S=36-16=20征收关税后：P=2×（1+50%）=3S=10+3P=10+3×3=19D=40-2P=40-2×3=34进口量=D-S=34-19=15
