四六级考试

【单选题】 Some people dislike exercise because ______.
A．they think it is physically exhausting
B．they find it hard to exercise while on a diet
C．they don't think it possible to walk 3 miles every day
D．they find consulting caloric-expenditure charts troublesome

【单选题】 "Even exercise professionals concede half a point here" (Line 3, Para. 2) means "They ______."
A．agree that the calories in a small piece of pastry can be difficult to work off by exercise
B．partially believe diet plays a supporting role in weight reduction
C．are not fully convinced that dieting can help maintain one's new weight
D．are not sufficiently informed of the positive role of exercise in losing weight

【单选题】 The word "real" in the last paragraph may most probably mean ______ .
A．serious
B．important
C．true
D．concrete

【单选题】 The writer considers that the Bronze Age succeeded the Stone Age because
A．there was a scarcity of wood and other building materials
B．bronze was less expensive than stone
C．stone was no longer available
D．more bronze than stone came into use

【单选题】 Critics of Al would probably agree with the statement that ______.
A．logic plays the most important part in human reasoning
B．fast computation shows the ability of understanding
C．the new silicon chip is working in the way that human brain works
D．reasoning is something too complicated to be copied by the computer