导管存在于种子植物的木质部,它是由许多端壁形成穿孔的导管分子连接而成的。( )
查看答案
植物的表皮细胞是由一层排列紧密,不含质体的死亡细胞所构成的。( )
Patient:Doctor,what’S the matter with me?Doctor:__________. Patient:But I‘m feeling terrible. Doctor:Actually you are as strong as a horse.
A. It,s terrible
B. It’s serious
C. Very well
D. Nothing serious
The best thing__________ happened to me was finding my best friend,Katrina.
A. what
B. as
C. that
D. which
Doctor:__________?Patient:I,m much better.My stomach problem is gone.Now I just feel hungry.
A. Do you have anything to declare,Sir
B. Good mornin9.May I help you
C. How are you feeling today
D. What seems to be the problem