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【单选题】
蛋白质是两性电解质,当其带负电荷时,溶液的pH为A.
碱性
B.
酸性
C.
pH=pI
D.
pH
E.
pH>pI
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举一反三
【简答题】什么是倒金字塔结构?它有什么优点?
【单选题】Some roads were flooded, ____ made the journey more difficult
A.
that
B.
which
C.
where
D.
it
【单选题】Some roads were flooded and the travelers should avoid ________ on such roads.
A.
to drive
B.
driving
C.
to driving
D.
drive
【单选题】女,35岁。心悸、甲状腺肿大,并伴有轻度呼吸不畅、压迫感,首次妊娠3个月余,诊为原发性甲亢,最有效的治疗方法是
A.
终止妊娠
B.
抗甲状腺药物治疗
C.
131治疗
D.
甲状腺大部切除术
E.
放射治疗
【单选题】Some of the roads were flooded, _______ made our journey more difficult. [ ]
A.
which
B.
it
C.
what
D.
that
【单选题】Some of the roads were flooded, _________ makes our journey more difficult.
A.
that
B.
it
C.
which
D.
who
【简答题】“倒金字塔结构”的消息由__________、__________、__________、__________几个部分组成。
【单选题】Some of the roads were flooded, _______ makes ourjourney difficult.
A.
that
B.
it
C.
which
D.
who
【单选题】Some roads were closed adn many trucks _____ in the snow.
A.
got stick
B.
were stuck
C.
were stick
D.
Get stuck
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