【简答题】Dogs are generally called “man's best friend”. They are loyal, funny and loving. They seldom complain and always obey their owners. People who have dogs seem to be happier and healthier than those who...
【简答题】A.You problem may not be understood correctly. B.You don't know if you are complaining at the right time. C.Your complaint may not reach the person in charge. D.You can't tell how the person on the li...
【简答题】Please give some information about the dvelopment and changes of protected cultivation from 1980s to the present in China . 2、 Why can we assure that "greenhouse will almost certainly survive?" 3、 ...