Many economists have given in to the fatal lure of mathematics.

单选题

Many economists have given in to the fatal lure of mathematics.

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单选题

Corrosion can have many causes.

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单选题

Many scientists have been probing psychological problems.

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材料题

t work in many industries. A large number of poor people are Old. Many companies do not hire people over 65 years old, the normal retirement age. Some poor adults do not look for jobs for a variety of personal reasons: they are sick, they do not have any motivation, they have family problems, or they do not believe that they can find a job. Other poor people look for a job but cannot find one. Many poor adults never went to high school. Therefore, when they look for jobs, they have few skill

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单选题

Many tourists have the bad habit of writing things in ______ places of interest.

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