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【單選題】
無機鹽在生物體生命活動中不可缺少，合成葉綠素和血紅蛋白分子必需的離子分別是
A.
Ca2+、Mg2+
B.
PO43+、K+
C.
Mg2+、Fe2+
D.
K+、I—
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舉報參考答案：
舉一反三
【單選題】Song Siyu got some achievements in the military school except _____.
A.
taking a bath in a short time
B.
having his meal with his eyes closed
C.
taking unreasonable criticism
D.
improving his character
【單選題】The underlined sentence means that _____
A.
Song sent his only son to military school, so he feels lonely.
B.
Song is the only one who sends his child t to military school.
C.
There are other people sending their children to military school besides Song.
D.
The fee of the military school is so high that only Song can afford it.
【單選題】What is the man going to take to the party?
A.
A pizza.
B.
Some chocolate.
C.
Some biscuits.
【單選題】From the second paragraph, we can know the old Chinese saying _____.
A.
is out of date in modern times.
B.
is disagreed by rich parents.
C.
is still worth trusting
D.
is deeply believed by better educated parent.
相關(guān)題目：
【單選題】Song Siyu got some achievements in the military school except _____.
A.
taking a bath in a short time
B.
having his meal with his eyes closed
C.
taking unreasonable criticism
D.
improving his character
【單選題】The underlined sentence means that _____
A.
Song sent his only son to military school, so he feels lonely.
B.
Song is the only one who sends his child t to military school.
C.
There are other people sending their children to military school besides Song.
D.
The fee of the military school is so high that only Song can afford it.
【單選題】What is the man going to take to the party?
A.
A pizza.
B.
Some chocolate.
C.
Some biscuits.
【單選題】From the second paragraph, we can know the old Chinese saying _____.
A.
is out of date in modern times.
B.
is disagreed by rich parents.
C.
is still worth trusting
D.
is deeply believed by better educated parent.
參考解析：
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