() the first and largest ethnic group to work on the construction of the transcontinental railroad.

单项选择题She was annoyed at his comment, thinking that he visitor () her.

单项选择题() tend to bemoan the lack of character in the young generation.

单项选择题He is a poorly learnt man. But he acts as though he ().

单项选择题It is imperative that you （）there in person.

A.are
B.were
C.be
D.will

单项选择题The DMZ extends about two hundred kilometers ().

单项选择题The（）in the early 1970s worsened an already stagnant economy in Britin.

A.oill crisis
B.high inflation rates
C.lange imports
D.unemployment problem

单项选择题It is well （）the time and effort to learn how to speak English now.

A.express
B.fun
C.worth
D.convenient

单项选择题In learning English we should place emphasispractices.

单项选择题The long poem （）in Anglo－Saxon period was termed England’s national epic.

A.The Canterbury Tales
B.Paradise Lost
C.The Song of

单项选择题As far as I am concerned, some days are lucky while others seem marked by bad () .