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【單選題】
胰島素是由2條肽鏈，共51個(gè)氨基酸組成的蛋白質(zhì)，在該分子中含有的肽鍵數(shù)目以及在其脫水縮合過程中生成的水分子數(shù)依次是
A.
49，51
B.
51，49
C.
51，51
D.
49，49
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舉報(bào)參考答案：
舉一反三
【單選題】Some middle schools in Australia have banned students from carrying mobile phones ____________.
A.
because they are students
B.
when they are at school
C.
because they are young
D.
when they are free
【單選題】The underlined word “they” in the fifth paragraph refers to ____________.
A.
many teachers
B.
some messages
C.
mobile phones
D.
some students
【單選題】We know from the passage that some children get mobile phones from ____________.
A.
the makers and sellers
B.
some other strangers
C.
their parents and friends
D.
some mobile phone users
【單選題】Which of the following is true about Westlake College?
A.
All teachers use computers.
B.
1500 students have laptops.
C.
It is an old college in America.
D.
Students there can do everything.
【單選題】“A window on the world” in the last paragraph means that students can ____________.
A.
attend lectures on information technology
B.
travel around the world
C.
have free laptops
D.
get information from around the world
相關(guān)題目：
【單選題】Some middle schools in Australia have banned students from carrying mobile phones ____________.
A.
because they are students
B.
when they are at school
C.
because they are young
D.
when they are free
【單選題】The underlined word “they” in the fifth paragraph refers to ____________.
A.
many teachers
B.
some messages
C.
mobile phones
D.
some students
【單選題】We know from the passage that some children get mobile phones from ____________.
A.
the makers and sellers
B.
some other strangers
C.
their parents and friends
D.
some mobile phone users
【單選題】Which of the following is true about Westlake College?
A.
All teachers use computers.
B.
1500 students have laptops.
C.
It is an old college in America.
D.
Students there can do everything.
【單選題】“A window on the world” in the last paragraph means that students can ____________.
A.
attend lectures on information technology
B.
travel around the world
C.
have free laptops
D.
get information from around the world
參考解析：
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