1.Because the America’s population is so _______, its people possess quite different ideas concerning authority, the meaning of truth, the limits of free expression.
2.Every year a certain number of scientists and technologists are sent to the countryside to solve the problems ________ farmers.
A.in conjunction with
D.on the threshold
3.Abruptly the ground fell away from our feet, an awesome ______ opened before us.
4.Lucy managed a laugh that ________ the silence like a dropped mirror.
5.Industry would be unwilling to invest further in ________ until it became profitable.
6.In the countryside people are used to using a tree ______ as a table, around which the whole family sit and happily have their dinner.
7.The local people complained about the ______ noise of the machines.
8.This research project has further proved that fireworks have ______ in China.
9.______ efforts are needed in order to finish important but unpleasant tasks.
10.I could not see well, my eyes had been ______, after the darkness, by the strong electric light.
11.Henry was ________ to take over the duties and responsibilities of his father from an early age in running a manufacturing factory.
12.Many of the scientists and engineers are judged ______ how great their achievements are.
A.in spite of
B.in ways of
C.in favor of
D.in terms of
13.The girls ______ an interested glance at the newcomer from under lowered eyelids when he entered the nursery.
14.The doctor ________ a sleeping drug into my grandfather’s arm.
15.There is no ________ about what education should be, what it is for, either in schools or in other places.
16.I began to smell the warmth and the love, and feel the peace, but above all I began to see the ______ of the human spirit.
17.The infamous robber escaped the police and is still, presumably, _____ along the streets looking for more victims.
18.Although the colonists ________ to some extent with the Native Americans, the Indians’ influence on American culture and language was not extensive.
19.The economy of the two countries has grown so interdependent over the past decade that neither could easily contemplate a (n)________.
20.If I am convinced that something is right, I should do it, ______ of consequences.