语法练习

1.Anna was reading a piece of science fiction, completely ___ to the outside world.

A.being lost
B.having lost
C.losing
D.lost

2.The problem of ___ to select as his successor was quickly disposed of.

A.what
B.which
C.whom
D.how

3.The first people to live in ___ Hawaii were by Polynesians, who sailed here in large canoesfrom other Pacific islands about 2,000 years ago.

A.now where is
B.what is now
C.it is now
D.now this is

4.Hovercraft, or air-cushion vehicles, are unusual ___ travel over land and water on a layer of air.

A.they
B.in they
C.that they
D.in that they

5.Before starting on a see voyage, prudent navigators learn the see charts, ___ and memorize lighthouse locations to prepare themselves for any conditions they might encounter.

A.sailing directions are studied
B.study the sailing directions
C.to direct sailing studies
D.studies direct sailing

答案详解

1.[D]【解析】过去分词作伴随状语，表示主句的逻辑主语是该动作的承受者。

2.[C]【解析】“疑问词+动词不定式”作介词of的宾语，whom充当select的宾语。

3.[B]【解析】what引导的从句作介词in的宾语。

4.[D]【解析】in that意为“因为”，相当于because。

5.[B]【解析】平行结构应保持语法上的一致，三个平行的动词分别为learn，study和memorize。