How many flows are there in global logistics?（）
How many（）are there altogether?
How many collision domains are shown（）。
How many people are there in the Ma family?
How many flow are there in global logistics?（）
How many categories are there inwater transport?（）
2.How many aspects of the differences are mentioned in the conversation?
How many ways are there to make room reservations?
How many steps are there in Heimlich Maneuver?
How many specific advantages of smart highways are mentioned in the end?
How many tips are given to memorize words?
How many problems are listed in the passage?
How many types resume are there?
How many note pads are in this form？
How many people outside cities go into cities to look for jobs each day？
How many unbelievable descriptions in Marco Polo' s book are mentioned in the passage？
How many persons are in the conversation？
How many reasons are mentioned that contribute to the unpopularity of a gap year in America（）
There are many traditions about getting married, which of the following is Not mentioned in this passage？
How many guests are arriving？
听力原文：Which of the following has NOT been mentioned as the job that thousands of Ph．Ds are now doing？
In the third paragraph, bricks are mentioned to indicate how ______.
21. Now many animals can do some simple jobs that are done by human beings.
How many asymmetric carbon atoms are present in （）
