题目内容

微分方程y"=ex通解为( )。

A. ( y=C1ex+C2x
B. ( y=C1ex+C2x2+C3
C. ( y=ex+C1x+C2
D. ( y=ex+C1x2+C2x+C3

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The United Nations has launched a new program with a view to _______ poverty in those African countries.

A. extricating
B. eradicating
C. distracting
D. extracting

After reading the passage, we may have such an impression that _________.

A. the second child in a family usually became a clergyman
B. it was not easy to get books, especially those one liked to read
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D. children were given money to buy books they liked

Why does the man vote for Sydney

A. There are mountains nearby.
B. He's been there once.
C. He wants to be away from the hustle and bustle.
D. He heard it would be fun to be there.

FORTlLAN77表达式“6/5+9/2* *3/2”的值为( )。

A. ( 33
B. ( 1
C. ( 5
D. ( 3

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