不要根据专业技术人员的需求采用不同的激励方法。()
The overfishing of sharks may result in______.
A. the abundance of sea grass habitat
B. the ruin of nursery for many marine species
C. the obvious increase of most marine species
D. the huge decline of the populations of their prey
Daylight time is used in many countries because______.
A. it is an acceptable alternative for standard time
B. it is a special convention in agricultural society
C. it is considered an effective way to save energy
D. it is a practice to make best use of solar energy
微信支付 
支付宝支付