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【單選題】
關(guān)于離子鍵、共價(jià)鍵的各種敘述中，正確的是（ ）
A.
在離子化合物里，只存在離子鍵，沒有共價(jià)鍵
B.
非極性鍵只存在于雙原子的單質(zhì)分子中
C.
在共價(jià)化合物分子內(nèi)，一定不存在離子鍵
D.
由不同元素組成的多原子分子里，一定只存在極性鍵
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舉報(bào)參考答案：
舉一反三
【單選題】What would Brownie do when someone was ill in the family?
A.
Look at them sadly.
B.
Keep them company.
C.
Play s with them.
D.
Touch them gently.
【單選題】Folic acid is ______.
A.
something in food
B.
a vegetable
C.
erous
D.
a certain kind of spinach
【單選題】The reading passage says that perhaps Popeye got his strength from______.
A.
iron
B.
folic acid
C.
spinach
D.
exercise
【單選題】Which of the following best summarizes the passage?
A.
Cell phones can do harm to children’s growth.
B.
Children suffer more from cell phone use.
C.
Children use cell phones too much.
D.
Cell phone use is linked to children’s behavioral problems.
【單選題】We can infer from Paragraph 2 that Brownie _________
A.
would eat anything when hungry
B.
felt sorry for her mistake
C.
loved playing hide-and-seek
D.
disliked the author’s dad
相關(guān)題目：
【單選題】What would Brownie do when someone was ill in the family?
A.
Look at them sadly.
B.
Keep them company.
C.
Play s with them.
D.
Touch them gently.
【單選題】Folic acid is ______.
A.
something in food
B.
a vegetable
C.
erous
D.
a certain kind of spinach
【單選題】The reading passage says that perhaps Popeye got his strength from______.
A.
iron
B.
folic acid
C.
spinach
D.
exercise
【單選題】Which of the following best summarizes the passage?
A.
Cell phones can do harm to children’s growth.
B.
Children suffer more from cell phone use.
C.
Children use cell phones too much.
D.
Cell phone use is linked to children’s behavioral problems.
【單選題】We can infer from Paragraph 2 that Brownie _________
A.
would eat anything when hungry
B.
felt sorry for her mistake
C.
loved playing hide-and-seek
D.
disliked the author’s dad
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