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【单选题】
在下列细胞物质运输,不需能量而属于被动运输的是( )A.
胞吞作用
B.
胞吐作用
C.
帮助扩散
D.
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举一反三
【简答题】My name is Lily. This is my classroom. There are 40 desks, 40 chairs, a bookcase, a computer and a teacher’s desk in it. It has two green doors and four windows. There’s a clock and a map on the wall(...
【单选题】There are no doors between two second-class cars; ______________, it might be a little noisier than the other classes.
A.
however
B.
therefore
C.
thanks to
D.
owing to
【简答题】论述采购计划的编制步骤。
【单选题】Which of the following details about the front of the house is CORRECT?
A.
The front is pink.
B.
The curtain is drawn.
C.
No window can be seen.
D.
There are two doors.
【简答题】简述采购计划编制的目的。
【单选题】In Poland, it is ______ for the hostess to remove the cover of the bunch of flower somebody presented to her.
A.
impolite
B.
polite
C.
expected
D.
unexpected
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