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【判断题】
容量瓶主要用于配制准确浓度的溶液或定量地稀释溶液,也可当作试剂瓶使用。A.
正确
B.
错误
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【单选题】The five rings on the Olympic flag ______ the five continents that are joined together in the Olympic Games.
A.
belong to
B.
stand for
C.
take apart
D.
pack up
【简答题】(This is) the athlete (whom) everyone (says) will win the (gold)medal at the winter Olympic s.
【单选题】Which sentence is not correct according to the text? ______.
A.
In dense WDM, the value of ‘dense’ may different for different persons
B.
The core has a higher refractive index than the cladding in a fiber
C.
A receiver needs to de-multiplex a singal when receives it
D.
The main issue on a fiber in transmission is controlling crosstalk effects
【单选题】What is this report mainly about?
A.
Phone inquires about hotel bookings for the 2008 Olympic Games.
B.
Beijing Hotel is one of the most top hotels in the capital.
C.
Beijing will host the 2008 Olympic Games.
D.
Visitors from all over the world will come to China for the games.
【单选题】According to the author, ______ may be the most important factor influencing healthy lifestyles.
A.
technology
B.
cultural background
C.
environment
D.
the desire to be healthy
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