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【简答题】电机运行原理基于（）和电磁力两个基本定律。
【简答题】WeChatis China's leading messaging and social media app from Holdings Limited.
【单选题】The leading social media platform currently is:
A.
Twitter.
B.
YouTube.
C.
Facebook.
D.
Instagram.
【简答题】As part of a student social survey project, you are leading a group to visit an exhibition in a small town. Write a letter: 1)ask for information regarding such things as the contents of the exhibitio...
【单选题】For example, social contact can boost development of the brain and immune system, leading to better health and less chance of depression later in life
A.
For example, social contact can boost development
B.
For example, social contact can boost development of the brain and immune system.
C.
For example, social contact can boost development of the brain and immune system, leading to better health
【单选题】Social anxiety disorder prevents some 15 million Americans from leading normal social and romantic lives, a new survey finds. The disorder leaves many isolated, ashamed and often misdiagnosed. Thirty-...
A.
being left alone
B.
leading normal lives
C.
embarrassing other people
D.
facing social or performance situations
【多选题】Social factors leading to drug abuse include (multiple choice) :
A.
Availability of addictive substances
B.
Family factors.
C.
Peer influence, peer pressure
D.
Cultural background.
E.
social environment and other factors
【单选题】Which of the following is a leading platform for social e-commerce?
A.
Amazon
B.
eBay
C.
Wikipedia
D.
Facebook
【单选题】One reason leading most people to lock their network is______.
A.
their lack of social responsibilities
B.
the lack of technological support
C.
their concerns about security and privacy
D.
the slow speed of the shared network
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