The reason why we choose to travel by China’s high speed trains is_（）
A. punctuality
B. convenience and comfort
C. fast speed and safety
D. reasonable price
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_became the man who finally tackled the problem of rails（）
A. Richard Trevithick
B. George Stephenson
C. James Strowbridge
D. Abraham Lincoln
In a company, HR director’s responsibilities include _____（）
A. hiring more workers
B. subcontracting work to other suppliers
C. introducing labor-saving initiatives
D. all of these
A _____ is entirely separate from the parties who own it（）
A. corporation
B. limited partnership
C. general partnership
D. unlimited proprietorship
According to hierarchy of needs theory, our highest need is for _____（）
A. esteem
B. social security
C. self-actualization
D. safety
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