人在胎儿期的心脏中有一个卵圆孔，其位置在（）

A．左右心室隔膜上

B．左右心房隔膜上

C．心房与心室的隔膜上

D．心室与动脉的隔膜上

词汇运用 用括号内所给词的适当形式填空 ( 每空不限一词)。(10分)

小题1: We are all looking forward to________ (go) on an outing on May Day.

小题2: Chinese people all dress________ (they) in the best clothes when important festivals come. 小题3:It takes ________ (little) time to go there by underground than by bus.

小题4:It’s his ________ (three) time to visit our city.

小题5: It is said that more interactive whiteboards (互动白板) ________（send）to local schools

in two years.

小题6:. People screamed with________ (excite) when they saw the Beijing Olympic torch “Lucky Cloud”.

小题7: I ________ (simple) can’t understand what you said.

小题8:It’s ________ (possible) for me to design the poster without your help.

小题9: We are greatly moved by the________ (fireman) spirit.

小题10: Have they done what they can________ (stop) the environment pollution?