The millions of calculations (计算) had been done by hand, they______all practical value by the time they were finished.
A. could lose
B. would have lost
C. might lose
D. ought to have lost
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Which statement is NOT TRUE according to the passage？
A. Living in large modem cities has so many disadvantages.
B. Large modern cities are not good to live in.
C. Many things that are going on in nature are not connected with large modem cities.
D. All the simple, good things of life are imposed on the people who live in large cities.
If you want to know what season it is, ______ .
A. you can take it for granted
B. you'd better visit a public park
C. you should use your sense of touch
D. you should drive a car
The writer always has his Thanksgiving Day in______.
A. his own house
B. his Daddy's
C. his grandparents'
D. one of his friends'
One way of producing cold is to allow ______ .
A. a liquid to move slowly
B. a liquid to evaporate
C. a gas to evaporate
D. a molecule to move slowly
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