单项选择题Why would electric cars cut down on air pollution().
A. They go only a short way. B. They are easier to keep clean. C. Electric power has no smoke. D. Electric cars need no energy.
单项选择题Which of the following is true according to the passage().
A. Clinton broke ground for the canal at both ends. B. Clinton started building the canal before he became governor. C. All parts of the canal were completed at the same time. D. Construction of the canal took eight years.
A. The Erie Canal brought profits of over $ 114 000000 B. It’s 363 miles from the Great Lakes to the Atlantic Ocean. C. The West was more advanced than the East when the canal was built. D. Many other states helped New York built the canal.
单项选择题It can be inferred that () into the Atlantic Ocean.
A. the Great Lakes flow B. the Hudson River flows C. Lake Erie flows D. the Erie Canal flows
单项选择题We can see that the Erie Canal ().
A. joined the Great Lakes together B. crossed New York from north to south C. played an important part in developing New York City D. was the first waterway built in the US
单项选择题20().
A.out B.over C.forward D.around
单项选择题19().
A.waiting B.ready C.hoping D.afraid
单项选择题18().
A.since B.after C.while D.until
单项选择题17().
A.quiet B.excited C.happy D.ashamed
单项选择题16().
A.including B.besides C.except D.regarding