纸币是以国家信用为基础的信用货币，无论是现金还是存款货币，都是中央银行代表国家对持有者的负债。（)

听力原文：W: How do you feel today？

M: I still have a headache, but my temperature has gone down.

Where are the speakers possibly？

A．In a factory.

B．In a hospital.

C．On a train.

_____(我突然想起来)that I still owed 200 dollars to my friend Tom.

I've _____ these lines again and again but I still keep forgetting them.

A. gone off

B. gone about

C. gone over

D. gone through

I should have gone to visit him in the hotel，______(但上周我都安排得满满的)．

I got a part-time job to pay for my education and I still can ’t manage to make ends meet.

A)我又要学习，又要花部分时间打工 , 因此我没法去参加这个会。

B)我找了一份兼职工作，学费已经交了 , 可我仍然还缺钱。

C)我找了一份兼职工作挣学费 , 可我仍然还入不敷出。

D)我入不敷出，得找一份兼职工作 , 才能交学费。

E)我还等不到会议结束，就得去找一份工作，以便交学费。

I'll have my long skirts shortened because they are ______ now．

我要把我的长裙改短，因为现在已经不流行了。

I wish I ______ to the party with you, but I had to finish my papers.

A．could have gone

B．went

C．might have gone

D．have gone

I wish I______to the party with you, but I had to finish my papers.

A．could have gone

B．went

C．might have gone

D．have gone

Not once since my son went to high school ______ traveling with him.

A．had I gone

B．have I gone

C．I have gone

D．I had gone

Not once since my son went to high school ______ traveling with him.

A．had I gone

B．have I gone

C．I have gone

D．I had gone