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【单选题】
示波管中有一对X偏转板和Y偏转板，其中X偏转板上加的是（）。A.
直流电压
B.
锯齿波信号
C.
F（t）信号
D.
正弦波信号
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反馈参考答案：
举一反三
【单选题】______ the 632-meter Shanghai Tower is finished, it will be the second tallest building in the world. [ ]
A.
When
B.
Since
C.
Before
D.
Unless
【单选题】有人常常把追求个人利益与自私算同起来,你认为以下说法正确的是
A.
追求个人利益就是自私的体现
B.
追求个人利益必然会导致自私
C.
在保证集体利益的前提下,要充分尊重和保障个人 利益
D.
个人利益与自私观念同时产生
【判断题】The speaker argues that Chinese will overtake English as the global language.
A.
正确
B.
错误
【单选题】Which of the following is TRUE about Shanghai Tower?
A.
Shanghai Tower has one layer of glass, which is like one huge tube.
B.
Shanghai Tower distorts about 1 degree every 10 floors.
C.
Shanghai Tower consumes lots of energy, which is not economically affordable and practical.
D.
Shanghai Tower has curved façade and spiraling form which symbolizes the dynamic emergence of modern China.
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