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【单选题】
下图是用显微镜观察植物细胞临时装片的两个视野，要把视野中的物像从甲图转为乙图，下列操作步骤正确的排序是( ) ①转动细准焦螺旋 ②调节光圈 ③移动玻片 ④转动转换器A.
③—①—②—④
B.
④—③—②—①
C.
③—①—④—②
D.
③—④—②—①
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举一反三
【单选题】We often meet together and discuss ________ .
A.
what to read
B.
about to read what
C.
to read what
D.
about what to read
【单选题】We are in ________ schools, but we often meet each other.
A.
same
B.
new
C.
different
【简答题】在GB18030汉字编码标准中，常用汉字一般采用______字节编码。
【单选题】一个物体在空气中称时物重G，浸没在密度是ρ的液体中称时物重为G’，这个物体的密度是（ ）
A.
（G-G’）ρ/G
B.
G/[ρ（G-G’）]
C.
Gρ/（G-G’）
D.
（G-G’）/（ρg）
【单选题】—You don’t see the professor from Singapore quite often, do you? —No, we only meet ______．
A.
eventually
B.
constantly
C.
occasionally
D.
frequently
【单选题】— You and Kate often meet, don't you? — We do meet________, but not regularly. [ ]
A.
now and then
B.
by and by
C.
step by step
D.
more or less
【简答题】When we meet someone for the first time, we often would like to talk about ourselves. We just want to show the best to others. But why not listen? Sometimes, listening is better than talking. Then how...
【单选题】When we meet, we often stop and say hello to ________.
A.
each another
B.
the other each
C.
another each
D.
each other
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