你什么时候起床（）

A.Come and play when you are convenient.

B.Come here to play if you are convenient.

C.Drop in whenever it’s convenient.

D.Drop in whenever you have convenienc

E.

A.午睡起床后

B.下午学习活动之前

C.离园前

A.早晨起床后

B.饭后

C.饭前

D.晚饭后或睡前

What is the difference between a real discount rate and a nominal discount rate？ When should a real discount rate be used in an NPV calculation, and when should a nominal rate be used？

A.“Where”——故障部位

B.“What”——什么故障

C.“Why”——故障原因

D.“When”——什么时候发生

A.while

B.when

C.as

D.for

A.start

B.starting

C.starts

Optimists do not blame themselves when things go wrong.

A．Y

B．N

C．NG

A.who

B. when

C. where

D. which