________ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.
选项:
A:
Even if
B:
As far as
C:
If only
D:
So long as
Even if
As far as
If only
So long as
以下文字与答案无关
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any far
B:even far
C:very further
D:any further
executable
B:input
C:output
D:assignment
Assignment
B:Control
C:I/O
D:Declaration
As if
B:Now that
C:Even though
D:So that
Have been changed
B:Will change
C:Have changed
D:Change
have been changed
B:will change
C:have changed
D:Change
factor endowments
B:tastes
C:Technology
D:all the above
what
B:which
C:that
D:as
prove
B:proves
C:have been proved
D:are proved
whatever
B:that
C:which
D:whichever
Whatever
B:That
C:Which
D:Whichever
or
B:and
C:but
D:so
A .have become
B:B .having become
C:C .to have become
D:D .to become
A.give away
B:B.leave out
C:C.give out
D:D.put away
">17.Passage 6Question 26 to 30 are based on the following passage:
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 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 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 . 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.
28. The underlined phrase "leak out" in the 3rd paragraph may mean“____”.
A.give away
B:B.leave out
C:C.give out
D:D.put away
should be
B:were
C:must be
D:are