小题1:____________can take part in the English Summer Camp.

A．Students under 13

B．Students aged 16

C．Students over 18

D．All the students小题2:The English Summer Camp lasts

A．9 days

B．16 days

C．18 days

D．26 days小题3:There are ______ways for you to register for the English Summer Camp.

A．one

B．two

C． three

D． four小题4:You can go to register on

A．August 1 st

B．August 6th

C．August 9th

D．August 26th小题5:You can _______by joining in the English Summer Camp

A．visit the whole country

B．become an experienced teacher

C．improve your Chinese

D．know about British customs

下列回声强度排列顺序，不正确的是（）

A.肾窦>胰腺>肝实质>肾皮质

B.肾窦>肾皮质>肾髓质>肝实质

C.肾髓质>胰腺>脾实质>血液

D.肝实质>肾皮质>血液>胆汁

E.胰腺>肾皮质>血液>尿液