草花种植设计是指什么？
参考答案：
是指对各种草本花卉进行造景设计，着重表现园林草花的群体色彩美、图案装饰美，并具有烘托园林气氛、创造花卉特色景观等作用。
I am a boy student in Grade Four.___小题1:____. At school I have three good friends._小题2:____.Xiao Jun is a girl. She is nine years old. She is in Class2, Grade 2. Her eyes are big. Her nose is small and her face is round. Look at the girl. ____小题3:_____ Her mouth is small. She is Xiao Qun, Lei Zi’s sister. She and I are eleven and we are in the same class.____小题4:___ He is short. ____小题5:____.He and Xiao Jun are in the same grade but in different classes.
从方框中所给的选项中选出能填入空白处的最佳选项，补全短文。
天线没有哪些指标？（）
A.交调
B.增益
C.带内平坦度
D.驻波比
