[单项选择]In the western United States one can still find posts to which nineteenth-century cowboys hitched their horses.


A. tied
B. led
C. pulled
D. brought

[单项选择]The United States ______ a western country. The Philippines ______ in the Pacific Ocean.
A. is; are
B. are; is
C. is; is
D. are; are

[单项选择]One-room schoolhouses can still be found in isolated areas of North Americ
A. a. bareB. deprivedC. remoteD. developed

[单项选择]In 1970, the United States was still by far the most productive of countries in the world, with a gross national product of $ 1, 014, 750 million which {{U}}amounted{{/U}} to $ 4,950 per person.
A. worked up to be
B. worked in being
C. worked on being
D. worked out to be

[单项选择]From the text, we can infer that if one can't fall asleep, it might be because of ______.

[单项选择]One can understand others much better by noting the immediate and fleeting reactions of their eyes and ______ to expressed thoughts.
A. dilemmas
B. countenances
C. concessions
D. junctions

[单项选择]

No one can deny that pesticides have improved the ability of farmers to bring their crops to market. (1) pesticides, farmers no longer have to worry that they will lose an entire crop (2) an army of cut Worms or fruit flies. (3) , Americans can rely on a large and varied food supply.
However, we Americans need to become more (4) about the effects those pesticides on our food. More (5) , we need to think about what new (6) is necessary to protect ourselves from a (7) too rich in Pesticide residue. If we don’t demand greater (8) on pesticide use, we may be surprised, dismayed, and (9) horrified by the consequence of its use.
On the most obvious level, farm workers who continue to use the pesticides (10) their present rate will (11) serious diseases. It’s no (12) that farmers (13) to herbicides have a six times greater risk of getting cancer. (14) , children
A. correspondence
B. incident
C. chance
D. coincidence