竞争对手基本情况研究包括_________等方面。
A.竞争对手的数量
B.竞争对手的分布
C.竞争对手的领域
D.它们各自的规模,资金,技术力量等。
参考答案:A, B, C, D
Many trees and flowers ________ in our city every year. [ ]
A. planted
B. are planted
C. were planted
D. plants
If you have a toothache, you should go to see a______.
A.policeman
B.teacher
C.nurse
D.dentist