nearly forty spaceships had been sent to Mars since the 1960s. Two-thirds of them failed. The first spaceship, Korabl, sent in 1962 by Russia was among them. It broke apart (分裂) near the earth.
( ) 33. For a long time humans think ________.
A. they can surely find life on Mars
B. there may be life on Mars
C. it’s too late for them to explore Mars now
D. Mars is the only planet that has life on it
( ) 34. The two robots_______.
A. have found out that it is warm and wet on Mars
B. were sent to Mars to find some stones
C. were the first two American robots that landed on Mars
D. are the only machines that have landed on Mars so far
( ) 35. The third paragraph mainly tells us ________.
A. it’s a very hard and dangerous trip for spaceships to Mars
B. two-thirds of the spaceships sent to Mars have failed
C. Spirit and Opportunity landed on Mars successful
D. Mars is called the “death planet”
( ) 36. From this passage we learn that ________.
A. the two robots have found water on Mars
B. Opportunity touched on Mars a week later than Spirit
C. it’s exciting to have the chance to look for signs of life on Mars
D. Korabl was the first Russian machine to land on Mars
D
Many children use the Internet to get useful knowledge and information, and to relax in their free time. But some of them are not using in a good way. Here are some rules to make sure you are safe and have fun on the Internet.
● Make rules for Internet use with your parents. For example, when you can go online, for how long and what activities you can go online.
● Don’t give your password (密码) 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 (允许). 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.
( ) 37. 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
( ) 38. The underlined phrase “leak out” in the third paragraph may mean “________.”
A. give away B. leave out C. give out D. put away
( ) 39. If your parents don’t agree, never ________.
A. read anything on the Internet