语法练习

1.___ has been known for about a hundred years, its commercial development has taken place since the beginning of the century.

A.Which
B.While
C.That

D.As

2.The elderly man who is moving the lawn is ___ the ,mayor himself.

A.no other but
B.no other than
C.no one than

D.none other than

3.To succeed on a scientific research project, ___.

A.one needs to be persistent
B.persistence is needed
C.one needs be a persistent person

D.persistence is one needs

4.Man has used metals for centuries in gradually increasing quantities but it was ___ the Industrial Revolution that they came to be employed in really vast quantities.

A.till
B.until
C.not until

D.not till

5.Peter has just arrived, but he talks as if he ___ everything here.

A.will know
B.has know
C.knew
D.know

答案详解

1.[D]【解析】as作为关系代词引导非限制性定语从句，指代后面的整个主句。

2.[D]【解析】none other than意为“不是别人，正是……”。

3.[A]【解析】to succeed in...是动词不定式做目的状语，后面主句的逻辑主语必须和这个不定式的主语一致；need做实意动词时跟带to的不定式。

4.[C]【解析】强调句式It is not until...that...意为“到……时候才……”。

5.[C]【解析】as if引导的状语从句用虚拟语气，表示从句动作与主句动作同时发生，从句用一般过去时。