重新组合原有认知系统中某些构成要素或成分，调整各成分间的关系或建立新的联系，从而应

He explained everything over and over again ______anyone should misunderstand him.

A．since

B．when

C．lest

D．as if

[A] since

[B] when

[C] lest

[D] as if

A.since

B.when

C.lest

D.as if

When he explained it again and again, the students' patience______.

A．ran over

B．ran on

C．ran out

D．ran off

When he explained it again and again, the student's patience ______ .

A．ran over

B．ran on

C．ran out

D．ran off

When he explained it again and again, the students' patience ______.

A．ran over

B．ran on

C．ran out

D．ran off

When he explained it again and again, the student's patience ______ .

A．ran over

B．ran on

C．ran out

D．ran off

What he emphasized over and over again was that, ___________(不管多么困难), they should never retreat even for an inch.

A．A.did he know

B．B.he know

C．C.did not he know

D．D.did not know he

A．A.()

B．B.all the time

C．C.time and time again

D．D.all the same

E．E.all day and all night