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【多選題】

有一個帶正電的驗電器,當一金屬球接近它的,觀察到驗電器金屬箔的張角減小了。由此可以判定金屬球: 

A.
帶正電荷
B.
帶負電荷
C.
可能不帶電
D.
一定不電
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【單選題】The author's purpose in writing the passage is to ____________.
A.
tell us the earthquake taking place in Yunnan has caused 5,000 homeless
B.
warn the people in mountainous areas in Yunnan to take care of earthquake
C.
call on more help from the people all over the country
D.
yze why the earthquake took place in this area
【單選題】The earthquake took place ___________.
A.
in the early morning
B.
at noon
C.
in the afternoon
D.
at night
相關題目:
【單選題】The author's purpose in writing the passage is to ____________.
A.
tell us the earthquake taking place in Yunnan has caused 5,000 homeless
B.
warn the people in mountainous areas in Yunnan to take care of earthquake
C.
call on more help from the people all over the country
D.
yze why the earthquake took place in this area
【單選題】The earthquake took place ___________.
A.
in the early morning
B.
at noon
C.
in the afternoon
D.
at night
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