According to the article, most people in the world can’t receive most of the information on the Web due to the problem of ( ) .
A. different languages
B. social conflicts
C. governmental disagreement
查看答案
Which of the following is NOT mentioned as a problem of many translating systems? ( ) .
A. They are not accurate enough.
B. They don’t work every day.
C. The translations are badly written.
“to kill two birds with one stone”means to ( ) .
A. spend time and moneymaking success
B. do things without conside1ing its results
C. solve both problems with only one move
What can you be asked to do to while using Duo lingo? ( ).
A. To the product with others.
B. To pay for the exercises you learn.
C. To describe the image that you see.
对视距加以限制，可以减小的误差影响有：
A. 气泡居中误差
B. 读数误差
C. 视差
D. 球气差
微信支付 
支付宝支付