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【单选题】
白僵蚕表面的白色粉霜是A.
加工时的粉尘
B.
菌丝
C.
气生菌丝和分生孢子
D.
掺伪物
E.
折出的蛋白质结晶
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举一反三
【单选题】(听力对应练习）How often does Tracy goes to the movies?
A.
twice a week
B.
once a week
C.
Not very often
【单选题】Tracy often listen to music in her spare time.中listen to music的中文意思是:
A.
听收音机
B.
听音乐
C.
打篮球
D.
/
【单选题】--- What do you often do_______ classes to relax yourselves? --- We often do eye exercises, listen to music or do some running around the school.
A.
in
B.
among
C.
between
D.
during
【单选题】—Don't you often listen to _____ rad io? —No. In fact, I haven't _____ radio . [ ]
A.
a ; an
B.
/ ; the
C.
an; /
D.
the; a
【简答题】嘧啶环上的第____位氮原子与戊糖的第____位碳原子相连形成____键,通过这种键相连而成的化合物叫____。
【单选题】The music ________ nice. I often ___________ it.
A.
listen to / sound
B.
hears / listen to
C.
listens to / listen to
D.
sounds / listen to
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