诱情是用试情公猪追逐久不发情的母猪，或把公母猪关在同一圈内，公猪的接触、爬跨等刺激可促进发情排卵。()
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Who died last Monday？
A. King Fahd.
B. Prince Naif.
C. The 81-year-old King Abdullah.
D. Frank Gardner.
What is Dignitas？
An assisted suicide organization.
B. A travel agency.
C. A hospital.
D. A police station.
According to the news, what is the main reason for Chinas rapid economic growth？
A. People"s living standard is rising.
B. The society is steady and secure.
C. Successful business investment.
D. Effective methods of constraining commercial banks" lending.
种母猪的繁殖性状的遗传力估计值较低，选种时一般以家系选择为好。()
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