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【简答题】
Do scientists know how many cryptic species exist?
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举一反三
【单选题】—Are they on the wall? —________. [ ]
A.
No, they are
B.
Yes, they are
C.
Yes, they're not
D.
Yes, they aren't
【简答题】读一读，再排序。 ( ) Are they on the table? ( 2 ) OK. ( 1 ) Open the door, please. ( ) Look! They are in the door! ( ) No, they aren't. ( ) Where are the keys?
【单选题】Traditionally, college students hold a graduation ceremony to encourage themselves before they on their life jouney.
A.
give up
B.
settle down
C.
get through
D.
set off
【多选题】拉伸塑料薄膜加固只适用于轻量的集装包装。
A.
机械化程度高，机动性高、灵活性强
B.
有利于托盘运输和集装箱运输
C.
在一定程度上降低了仓库空间的利用率
D.
有时候会降低装卸作用效率
【单选题】According to the passage, how are ants guided by trail pheromones?
A.
They concentrate on the smell of food.
B.
They follow an ant who is familiar with the trail
C.
They avoid the vapor spaces by moving in a straight line.
D.
They sense the vapor through their antennae.
【简答题】The school was across the street from our home and I would often watch the kids as they played on the playground. She seemed so small as she pushed her way 36 the crowd of boys on the playground. She ...
【单选题】Traditionally, college students hold a graduation ceremony to encourage themselves before they on their life journey.
A.
give up
B.
settle down
C.
get through
D.
set off
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