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【判断题】
BeCl 2 为共价化合物,而 MgCl 2 和 CaCl 2 为离子化合物。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】—What do you think made Mary so upset? —_______ her new bike.
A.
As she lost
B.
Lost
C.
Losing
D.
Because of losing
【简答题】证明方程x 3 -5x-2=0只有一个正根，并求此正根的近似值，精确到10 -3 ．
【单选题】-What do you think made Mary so upset? -_________ her new bike. [ ]
A.
As she lost
B.
Lose
C.
Losing
D.
Because of losing
【简答题】—What do you think made Mary so
upset? —_______ her new bike.A. As she lost B. Lost C. Losing D. Because of losing
【单选题】-----What do you think made Mary so upset ? -----_______her new bike
A.
As she lost
B.
lost
C.
Because she lost
D.
Losing
【单选题】— What do you think made Mary so upset? — ____ her new bike. [ ]
A.
Lost
B.
As she lost
C.
Losing
D.
Because of losing
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