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【单选题】
下列暂时不能献血的情况是（）。A.
淋病、梅毒患者
B.
HIV感染者
C.
病毒性肝炎患者
D.
妇女月经期前后三天
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【简答题】要如何提高顾客让渡价值?
【单选题】In 1995 about 700,000 robots were operating in the industrialized world. Over 500.000 were used in Japan, about 120,000 in Western Europe, and about 12,000 in the United States. Many robot application...
A.
robots can be used in many fields
B.
what jobs robots can do
C.
robots' activities
D.
human being's partner—robots
【简答题】A．About 200 miles. B．About 1,000 miles. C．About 7,000 miles. D．About 5,000 miles.
【简答题】A．About 700 million light-years from Sun. B．About 700 million light-years from Earth. C．About 700 million light-years from the black hole. D．About 700 million light-years from a galaxy.
【单选题】According to the article, which of the following is NOT true?
A.
In 1995 about 700,000 robots were operating in the industrialized world.
B.
Why people use the robots is that they are neither dangerous nor unpleasant.
C.
In medical laboratories, robots can be used to handle Potentially dangerous materials, such as blood or urine samples.
D.
In other cases, robots are used in repetitive, unchangeable tasks in which human performance might degrade over time.
【简答题】比较下列各数的c小． 300 000 000______c30 000 000 七07 000 000______7 0七0 000 000 七 700 000 000______七 700 000 000 8 700 000 000______870 000 000 8 七00 000 000______8七万 1亿______99 999 999．
【简答题】如何提高顾客让渡价值?
【单选题】How long is the Changjiang River?
A.
About 6 000 km.
B.
About 5 000 km.
C.
About 4 000 km.
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