九年級上英語單元檢測題及答案

don’t give your password (密碼) to anyone else, and never leak out the following information---your real name, home address, age, school, phone number or other personal information. 
check with your parents before giving out a credit (信用) card number.
never send a photo of yourself to someone in e-mail unless your parents say it’s ok.
check with your parents before going into a chat room. different chat rooms have different rules and attract different kinds of people. you and your parents must make sure it’s a right place for you.
never agree to meet someone you met on the internet without your parent’s permission (允許). never meet anyone you met on line alone.
always remember that people online may not be who they say they are. treat everyone online as strangers.
if something you see or read online makes you uncomfortable, leave the site. tell a parent or teacher right away.
treat other people as you’d like to be treated. never use bad language.
remember—not everything you read on the internet is true.
(    )56. if you want a true friend on the internet , you can _______ .
  a. tell the people what your name is.     b. meet the people on line alone.
  c. write an e-mail about yourself.       d. get your parent’s permission.
(    )57. it’s good for children to ________ on the internet.
a. give password to others b. get useful knowledge and information
c. give out a credit card number d. go into a chat room as they’d like to
(    )58. the underlined phrase “leak out” in the third paragraph may mean “________.”
  a. give away　   b. leave out      c. give out        d. put away
(    )59. if your parents don’t agree, never ________.
  a. read anything on the internet          b. relax in your free time
  c. have a face-to face meeting with anyone you met online
  d. treat other people as you’d like to be treated
(    )60. this passage is mainly about “________”.
  a. how to use computers b. surfing on the internet
  c. information on the internet d. internet safety rules
e
do you know why different animals or pests (昆蟲) have their special colors? colors in them seem to be used mainly to protect themselves.
some birds like eating locusts, but birds cannot easily catch them. why? it is because locusts change their colors together with the change of the colors of crops. when crops are green, locusts look green. but as the harvest time comes, locusts change to the same brown color as crops have. some other pests with different colors from plants are easily found and eaten by others. so they have to hide themselves for lives and appear only at night.