To keep safe in coming summer vacation you are supposed to ________.
① refuse to let strangers in
②turn off the gas(煤气)after cooking
③go swimming alone in the river
④take care of your own things when you travel
⑤leak(泄露)your personal information on the Internet
A. |
②③⑤ |
B. |
①②④ |
C. |
①③⑤ |