问题 选择题

Maybe if I_____ science, and not literature then, I would be able to give you more  help. 

A.studied

B.wouldstudy

C.hadstudied

D.wasstudying

答案

答案:C

题目分析:句意为:如果我那时学的是科学,而不是文学,那么我也许能帮助你。虚拟语气的用法是从句的谓语动词要在主句的谓语动词的基础上往后退一个时态。即如果句子主句是一般式,那么从句就要用过去式。但在这个句子中,主句是对现在事实的说明,所以使用一般现在时。而then一词说明是与过去事实相反,所以从句应该使用过去完成时,选C。

完形填空

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

_1___people use money to buy food, furniture, books, bicycles and hundreds of other things they need or want. When they work, they usually get paid in money.

Most of the money today is made of metal or paper. __2__. One of the first kinds of money was shells.

Shells were not the only things used as money. In china, cloth and knives were used. In the Philippine Islands, rice was used as money for a long time. Elephant tusks, money tails and salt were used as money in parts of Africa.

The first metal coins were made in china. They were round and had a square hole in the center._3___.

Different countries have used different metals and designs for their money._4____. Sweden and Russia used copper to make their money. Later some countries began to make coins of gold and silver.

But even gold and silver were inconvenient if you had to buy something expensive. Again the Chinese thought of a way to improve money.__5__. The first paper money looked more like a note from one person to another than the paper money used today.

Money has had an interesting history from the days of shell money until today.

A.The first coins in England were made of tin (踢).

B.But people used to use all kinds of things as money.

C.No one knows for certain when people began to use money.

D.People strung(串联)them tighter and carried them from place to place.E. Money, as we know, is all made of paper.

F. They began to use paper money.

G. Today anyone will accept money in exchange for goods and services.

单项选择题