You may know all the words on the right， but which of the following carries meaning？（ ）
second， friend， self ， a， a， is |
| A． |
A friend self is a second． |
| B． |
A second is self a friend． |
| C． |
A friend is a second self． |
| D． |
Self a second is a friend． |
﹣I don't know how to use the App Fun Dubbing．
﹣Ask Jimmy for help． He has lots of in doing it．（ ）
A．experienceB．troubleC．courage
China great achievements in science and technology since 1978．（ ）
A．makesB．madeC．has made
You can surf the Internet you want to know about the 2020 World Middle School Games．（ ）
A．untilB．afterC．if
﹣How ! There are no workers in the bank．
﹣It's the first self﹣service bank in China．（ ）
A．strangeB．scaryC．boring
Blue whales are ． We should try to protect them．（ ）
A．in timeB．in publicC．in danger