如图所示，在调节平衡后的杠杆两侧，分别挂上相同规格的钩码，杠杆处于平衡状态。如果两侧各去掉一个钩码，则杠杆（   ）

宇航员在失重状态下，体内的血液也能正常输送到离心脏较远的下肢，科学家是从下列哪种生物中得到的启示                                  （    ）

A．I came to school with her this morning.

B．Then it must be Eliza's.

C．I didn't see her this morning.

D．Then whose is it?

E．It could belong to Sandy.

F．Its owner can't be a boy.

G．It can't be hers.

A：Excuse me，Mary.Is this your coat?

B：No，it isn't. Mine is white.

A：____ 

B：It might be Sandy's.She likes pink.

A：____ She wore a dress this morning.

B：How do you know that?

A：____ 

B：I see.Let's see what's in the pocket of the coat.Wow，here's a hair band.____ 

A：It might belong to Eliza.Eliza has long hair and pink is her favorite color.

B：Oh，there're some candies in the other pocket.

A：____ She likes eating candy very much.

B：Yes，you're right.Let's go to see her.

福娃贝贝和晶晶参加50米的赛跑。贝贝用12秒，晶晶用11秒。____跑得快，快____秒。